refactor: Remove repetition from menu-handling code

[claremacrae]

Types of changes

Internal changes:

• Refactor (prefix: refactor - non-breaking change which only improves the design or structure of existing code, and making no changes to its external behaviour)

Description

Remove some code repetition

Motivation and Context

I wanted to make the following less likely to happen again with other menus:

• Set task status context menu overlaps with callout context menu on Linux, Windows and Android [for tasks in callouts] #2739
• Set task status context menu hidden by Obsidian context menu [in Tasks search results, in Live Preview mode only] #3582

How has this been tested?

Exploratory testing in the test vault and my own vault.

Screenshots (if appropriate)

Checklist

• My code follows the code style of this project and passes yarn run lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• My change has adequate Unit Test coverage.

Terms

• My contribution follows this project's contributing guide
• I agree to follow this project's Code of Conduct

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud