feat : Add global search result navigation shortcuts

[NikkiAung]

Add global search result navigation shortcuts #3240

Add ALT+. and ALT+, shortcuts for navigating search results globally
without requiring manual Search view switching. This improves workflow
efficiency when reviewing and editing multiple search result occurrences. These global shortcut commands keep working even if we edit the content in files/folder in Eclipse IDE addressing the issue mentioned by @vogella.

Fixes #3240

ALT+. Flow (Next Search Entry)

User presses ALT+.
    ↓
plugin.xml: "ALT+. triggers globalNextSearchEntry command"
    ↓
plugin.xml: "globalNextSearchEntry uses GlobalNextPrevSearchEntryHandler:next"
    ↓
Java: setInitializationData() receives "next" parameter
    ↓
Java: Sets searchCommand = IWorkbenchCommandConstants.NAVIGATE_NEXT
    ↓
Java: execute() method runs three-command sequence:
    1. Show Search view
    2. Execute NAVIGATE_NEXT command
    3. Activate editor

ALT+, Flow (Previous Search Entry)

User presses ALT+,
    ↓
plugin.xml: "ALT+, triggers globalPreviousSearchEntry command"
    ↓
plugin.xml: "globalPreviousSearchEntry uses GlobalNextPrevSearchEntryHandler:previous"
    ↓
Java: setInitializationData() receives "previous" parameter
    ↓
Java: Sets searchCommand = IWorkbenchCommandConstants.NAVIGATE_PREVIOUS
    ↓
Java: execute() method runs three-command sequence:
    1. Show Search view
    2. Execute NAVIGATE_PREVIOUS command
    3. Activate editor

[NikkiAung]

Here is the demo after making some code changes.

Screen.Recording.2025-09-24.at.7.31.34.PM.mov

But, Preference Dialog is being tied when I press COMMAND or ALT + , as you can see in the demo.

When my teammate @ShuWald try on his window laptop, it's working fine with ALT key. Feel free to refer in the issue discussion section.

Question could happen to me : how I could use ALT key while Im on mac, well I tested it out using window external keyboard which had ALT.

Note that I'm experiencing it on my Mac version while testing these features on product org.eclipse.ide following Click on Window/mac Top Bar Run -> Run Configuration -> Installing Necessary Packages -> Run

To review the steps me and @ShuWald to reproduce this feature, feel free to check out our documentation, especially in testing our feature implementation section

https://awesome-kumquat-7b7.notion.site/CodeDay-Lab-2220d5c2f5e880539c85de579b8b7310?pvs=74

[NikkiAung]

Great! Type Casting didn't work for me as well! Gotta remove it!