FIX: Select dropdown menu for Path in Input Actions Editor from any position in Path button

[tspiller]

Description

Depending on EditorGUIUtility's default label width at the time of window creation, the Path label rect can overlap the Binding Text rect in the Input Actions Editor. Particularly when resolution has been changed and the default has not been updated. This results in both Tooltip text appearing when hovering over the leftmost part of the button and the inability to select the dropdown menu from the button
This change makes the label rect fit to the label itself and recalculates the position of the other elements based on the new width and their positions in the window.

Testing status & QA

Local testing on multiple platforms at different resolutions.

Overall Product Risks

• Complexity: Low
• Halo Effect: Low

Comments to reviewers

Checklist

Before review:

• Changelog entry added.
  • Explains the change in Changed, Fixed, Added sections.
  • For API change contains an example snippet and/or migration example.
  • JIRA ticket linked, example (case %%). If it is a private issue, just add the case ID without a link.
  • Jira port for the next release set as "Resolved".
• Tests added/changed, if applicable.
  • Functional tests Area_CanDoX, Area_CanDoX_EvenIfYIsTheCase, Area_WhenIDoX_AndYHappens_ThisIsTheResult.
  • Performance tests.
  • Integration tests.
• Docs for new/changed API's.
  • Xmldoc cross references are set correctly.
  • Added explanation how the API works.
  • Usage code examples added.
  • The manual is updated, if needed.

During merge:

• Commit message for squash-merge is prefixed with one of the list:
  • NEW: ___.
  • FIX: ___.
  • DOCS: ___.
  • CHANGE: ___.
  • RELEASE: 1.1.0-preview.3.

After merge:

• Create forward/backward port if needed. If you are blocked from creating a forward port now please add a task to ISX-1444.

[ekcoh]

Changes looks good. Thanks for actually deriving required space based on text bounds.

[Pauliusd01]

LGTM, tried editing bindings with different actions assets including project wide actions, with different unity window scaling, different windows display scaling (100-225%), between 2 monitors, auto save on/off, etc. Did not see any issues clicking on the dropdown itself or picking the bindings