Use IList to avoid enumerator allocation

[jennyf19]

fixes #3174

done w/cline in VS code.

Benchmark results (not done on dev box):

[github-actions]

Summary

Summary

Generated on:	4/12/2025 - 11:24:22 PM
Coverage date:	4/12/2025 - 11:13:46 PM - 4/12/2025 - 11:23:57 PM
Parser:	MultiReport (60x Cobertura)
Assemblies:	1
Classes:	7
Files:	2
Line coverage:	80.3% (620 of 772)
Covered lines:	620
Uncovered lines:	152
Coverable lines:	772
Total lines:	483
Branch coverage:	67.8% (228 of 336)
Covered branches:	228
Total branches:	336
Method coverage:	Feature is only available for sponsors

Coverage

Microsoft.IdentityModel.JsonWebTokens - 80.3%

Name	Line	Branch
Microsoft.IdentityModel.JsonWebTokens	80.3%	67.8%
Microsoft.IdentityModel.JsonWebTokens.JwtTokenUtilities	100%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJwsRegex_0	81.4%	67.6%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJwsRegex_0	81.4%	67.6%

[github-actions]

Summary

Summary

Generated on:	4/14/2025 - 5:31:05 PM
Coverage date:	4/14/2025 - 5:20:10 PM - 4/14/2025 - 5:30:38 PM
Parser:	MultiReport (60x Cobertura)
Assemblies:	1
Classes:	7
Files:	2
Line coverage:	80.3% (620 of 772)
Covered lines:	620
Uncovered lines:	152
Coverable lines:	772
Total lines:	483
Branch coverage:	67.8% (228 of 336)
Covered branches:	228
Total branches:	336
Method coverage:	Feature is only available for sponsors

Coverage

Microsoft.IdentityModel.JsonWebTokens - 80.3%

Name	Line	Branch
Microsoft.IdentityModel.JsonWebTokens	80.3%	67.8%
Microsoft.IdentityModel.JsonWebTokens.JwtTokenUtilities	100%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJwsRegex_0	81.4%	67.6%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJwsRegex_0	81.4%	67.6%

[github-actions]

Summary

Summary

Generated on:	4/14/2025 - 5:48:08 PM
Coverage date:	4/14/2025 - 5:37:40 PM - 4/14/2025 - 5:47:43 PM
Parser:	MultiReport (60x Cobertura)
Assemblies:	1
Classes:	7
Files:	2
Line coverage:	80.3% (620 of 772)
Covered lines:	620
Uncovered lines:	152
Coverable lines:	772
Total lines:	483
Branch coverage:	67.8% (228 of 336)
Covered branches:	228
Total branches:	336
Method coverage:	Feature is only available for sponsors

Coverage

Microsoft.IdentityModel.JsonWebTokens - 80.3%

Name	Line	Branch
Microsoft.IdentityModel.JsonWebTokens	80.3%	67.8%
Microsoft.IdentityModel.JsonWebTokens.JwtTokenUtilities	100%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJwsRegex_0	81.4%	67.6%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJwsRegex_0	81.4%	67.6%

[github-actions]

Summary

Summary

Generated on:	4/14/2025 - 5:51:08 PM
Coverage date:	4/14/2025 - 5:40:24 PM - 4/14/2025 - 5:50:38 PM
Parser:	MultiReport (60x Cobertura)
Assemblies:	1
Classes:	7
Files:	2
Line coverage:	80.3% (620 of 772)
Covered lines:	620
Uncovered lines:	152
Coverable lines:	772
Total lines:	483
Branch coverage:	67.8% (228 of 336)
Covered branches:	228
Total branches:	336
Method coverage:	Feature is only available for sponsors

Coverage

Microsoft.IdentityModel.JsonWebTokens - 80.3%

Name	Line	Branch
Microsoft.IdentityModel.JsonWebTokens	80.3%	67.8%
Microsoft.IdentityModel.JsonWebTokens.JwtTokenUtilities	100%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated	80.3%	67.8%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F12A1AEDDDFE32BA DF4DBFF323AF1BCB48B9F9721B7CD3E05F5E034CF225E3DF8__CreateJwsRegex_0	81.4%	67.6%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJweRegex_1	79.2%	68%
System.Text.RegularExpressions.Generated.<RegexGenerator_g>F334844C618E00D3 CEC5D3FE0D00CF0141BBEE98635313BB2CB8D3921464CE05A__CreateJwsRegex_0	81.4%	67.6%