GPTUtils: Prevent caching empty slot info in gptUtils and add empty i…

[pm-nitin-nimbalkar]

…nfo test cases

Type of change

• Bugfix

• Feature

• New bidder adapter

• Updated bidder adapter

• Code style update (formatting, local variables)

• Refactoring (no functional changes, no api changes)

• Build related changes

• CI related changes

• Does this change affect user-facing APIs or examples documented on http://prebid.org?

• Other

Description of change

PR: Optimize GPT Slot Info Caching
Changes

• Added a check to prevent caching empty slot information objects in getGptSlotInfoForAdUnitCode
• Only cache slot information when it contains actual data

Why

• Previously, empty objects were being cached when no matching GPT slot was found
• This led to stale information being returned on subsequent calls, even if the slot became available later

Benefits

• Ensures fresh slot information is fetched on each call when previous attempts returned no data
• Prevents unnecessary cache entries for non-existent slots
• Improves accuracy of ad unit to GPT slot mapping over time as slots become available

Other information