Sofien NAAS

## Problem: Defined route: `WP_Route::get('flights', 'callbackFn');` Any of the following request URIs will match with the above route definition and ***'callbackFn'*** get fired: ***"/flight"***, ***"/anytext"***, ***"/tttttttt"***, ***"eeee"*** ...etc ## Fix:...

[ExpressionLanguage] Fix coalescing operator deep nested properties

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| Q | A | ------------- | --- | Branch? | 6.2 | Bug fix? | yes | New feature? | no | Deprecations? | no | Tickets | Fix...