fix(overlay): conditionally cache element size - master

[RivaIvanova]

Closes #16458

Additional information (check all that apply):

• Bug fix
• New functionality
• Documentation
• Demos
• CI/CD

Checklist:

• All relevant tags have been applied to this PR
• This PR includes unit tests covering all the new code (test guidelines)
• This PR includes API docs for newly added methods/properties (api docs guidelines)
• This PR includes feature/README.MD updates for the feature docs
• This PR includes general feature table updates in the root README.MD
• This PR includes CHANGELOG.MD updates for newly added functionality
• This PR contains breaking changes
• This PR includes ng update migrations for the breaking changes (migrations guidelines)
• This PR includes behavioral changes and the feature specification has been updated with them

[Copilot]

Pull request overview

This PR addresses issue #16458 by adding conditional caching of element sizes in the overlay service. The fix introduces a new cacheSize setting that controls whether an element's dimensions should be captured before or after moving it into the overlay container.

Changes:

• Added cacheSize boolean flag to OverlaySettings interface
• Modified overlay element size calculation logic to conditionally cache dimensions based on the new flag
• Set cacheSize: false for tooltips and notifications to prevent size inheritance issues

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
utilities.ts	Added cacheSize property to OverlaySettings interface
overlay.ts	Implemented conditional size caching logic and set default cacheSize: true
tooltip-target.directive.ts	Disabled size caching for tooltips
notifications.directive.ts	Disabled size caching for notifications
overlay.spec.ts	Updated tests to verify conditional size caching behavior

[wnvko]

So we know this PR is breaking the tooltip. What is the reason this happening? Can we revert the change that made this happen?
Adding this additional property to the overlay settings and use it in this way in the tooltip looks like a breaking change. IMO it will be better to find out what happened in the above mentioned PR and to revert it.