Fix copying of the reduced Planck constant

[Snuffleupagus]

Please see https://en.wikipedia.org/wiki/H_with_stroke

[Snuffleupagus]

I stumbled upon this in py-pdf/pypdf#2009 (comment) and as far as I can tell the reduced Planck constant is the only one, of the listed characters, that we don't already handle correctly when copy-pasting.

[calixteman]

What a nice PR title :)
LGTM. Thank you.

[Snuffleupagus]

/botio test

[moz-tools-bot]

From: Bot.io (Linux m4)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/a3cefd177ef5592/output.txt

[moz-tools-bot]

From: Bot.io (Windows)

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Received

Command cmd_test from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.193.163.58:8877/1117898d77db3fb/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

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Failed

Full output at http://54.241.84.105:8877/a3cefd177ef5592/output.txt

Total script time: 26.66 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: FAILED
• Regression tests: FAILED

  different ref/snapshot: 12
  different first/second rendering: 2

Image differences available at: http://54.241.84.105:8877/a3cefd177ef5592/reftest-analyzer.html#web=eq.log

[moz-tools-bot]

From: Bot.io (Windows)

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Failed

Full output at http://54.193.163.58:8877/1117898d77db3fb/output.txt

Total script time: 38.25 mins

• Font tests: Passed
• Unit tests: Passed
• Integration Tests: FAILED
• Regression tests: FAILED

  different ref/snapshot: 33

Image differences available at: http://54.193.163.58:8877/1117898d77db3fb/reftest-analyzer.html#web=eq.log

[Snuffleupagus]

/botio makeref

[moz-tools-bot]

From: Bot.io (Windows)

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Received

Command cmd_makeref from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.193.163.58:8877/8dbd8eb3247d3d0/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

---

Received

Command cmd_makeref from @Snuffleupagus received. Current queue size: 0

Live output at: http://54.241.84.105:8877/15b19ff61c07e05/output.txt

[moz-tools-bot]

From: Bot.io (Linux m4)

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Success

Full output at http://54.241.84.105:8877/15b19ff61c07e05/output.txt

Total script time: 21.90 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed

[moz-tools-bot]

From: Bot.io (Windows)

---

Success

Full output at http://54.193.163.58:8877/8dbd8eb3247d3d0/output.txt

Total script time: 25.30 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed

[pubpub-zz]

@Snuffleupagus
I've completed the list of Glyphs names to Unicode in py-pdf/pypdf#2016 if you are interesting