Fixed hover sticking

[Mystin]

Description

Made ElementController's mouseEntered call mouseMoved rather than using duplicate code, and changed the condition in mouseExited to check for elements already being highlighted rather than elements under the cursor after it has already exited.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Enhancement (improvement to an already existing feature)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

How Has This Been Tested?

Visual confirmation.

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (if applicable)
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[jadeandtea]

Looks like the issue still persists when dragging the mouse. Should be a simple fix?