fix: strip unresolved placeholders on deploy instead of throwing

[ankita10119]

🔧 Changes

Previously, deploying a resource with an unresolved ##...## or @@...@@ placeholder would throw an error and abort the deploy. This caused the export→import round-trip to fail for connections and other resources where the CLI auto-generates secret placeholders on export (e.g. ##CONNECTIONS_WAAD_SECRET##), since Auth0 does not expose the actual secret value, making it impossible for users to provide the keyword mapping.

Change: Instead of throwing, unresolved placeholders are now stripped from the payload before the API call, with a warn log per field. Auth0 preserves its existing value for any stripped field.

• Added stripUnresolvedPlaceholders utility in src/tools/utils.ts
• APIHandler.processChanges (create, update, conflict paths) now calls stripUnresolvedPlaceholders in place of validateNoUnresolvedPlaceholders

📚 References

• PR fix: strip unresolved keyword placeholders from API payloads before deploy  #1360

🔬 Testing

• Unit tests updated in test/tools/utils.test.js and test/tools/auth0/handlers/default.tests.ts
• Tested against real tenant: exported a WAAD connection (producing ##CONNECTIONS_WAAD_SECRET##), ran import without defining the mapping, field was stripped with a warning and the connection updated successfully

📝 Checklist

• All new/changed/fixed functionality is covered by tests (or N/A)
• I have added documentation for all new/changed functionality (or N/A)

[codecov-commenter]

Codecov Report

❌ Patch coverage is 86.66667% with 2 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (master@52b338f). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
src/tools/auth0/handlers/default.ts	66.66%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1436   +/-   ##
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  Files             ?      163           
  Lines             ?     7542           
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  Hits              ?     6052           
  Misses            ?      801           
  Partials          ?      689           

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