[fix] FIBSEM tab XRC caused errors with wxPython 4.1+

[pieleric]

The commit f8f7870 ([fix] update xrc files) changed some of the
sizer flags which turned out to not be useful. On wxPython 4.1 (eg,
Ubuntu 24.04) and later, these flags cause errors, like this:

15:43:12: XRC error: 281: horizontal alignment flag "wxALIGN_RIGHT" has no effect inside a horizontal box sizer, remove it and consider inserting a spacer instead
15:43:12: XRC error: 326: horizontal alignment flag "wxALIGN_RIGHT" has no effect inside a horizontal box sizer, remove it and consider inserting a spacer instead
15:43:12: XRC error: 1013: vertical alignment flag "wxALIGN_CENTER_VERTICAL" has no effect inside a vertical box sizer, remove it and consider inserting a spacer instead

=> Remove these unneeded flags.

[coderabbitai]

📝 Walkthrough

Walkthrough

This pull request modifies wxWidgets GUI resource definition files by simplifying alignment style flags in widget declarations. The changes remove or reduce alignment flags such as wxALIGN_RIGHT and wxALIGN_CENTER_VERTICAL from multiple controls in main_xrc.py and panel_tab_fibsem.xrc, typically leaving only positional flags like wxLEFT combined with wxALIGN_CENTER_VERTICAL. No functional logic, control hierarchy, event bindings, or control behavior are altered—only the explicit alignment directives in the resource XML are simplified.

Possibly related PRs

• [fix] bug_reporter: drop mix of wx.EXPAND and wx.ALIGN_* #3183: Removes problematic wx.ALIGN_* flags from GUI layout definitions in sizer configuration, addressing the same alignment flag issues as this PR
• [MSD-264][feature] Improve FIBSEM tab UI #3307: Modifies the same GUI resource files (panel_tab_fibsem.xrc and related layout definitions) with sizer and alignment flag adjustments

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the main change: fixing XRC file errors with wxPython 4.1+ by removing ineffective alignment flags.
Description check	✅ Passed	The pull request description clearly explains the issue (wxPython 4.1+ errors from unnecessary alignment flags), provides error examples, and describes the fix (removing unneeded flags).

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✨ Finishing touches

• 📝 Generate docstrings

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[Copilot]

Pull request overview

Removes invalid/unnecessary XRC sizer alignment flags in the FIBSEM tab resources to avoid wxPython 4.1+ XRC load errors (notably on Ubuntu 24.04+).

Changes:

• Removed wxALIGN_RIGHT from sizer item flags where it has no effect in horizontal box sizers (and triggers wxPython 4.1+ XRC errors).
• Removed wxALIGN_CENTER_VERTICAL where it has no effect in a vertical box sizer (and triggers wxPython 4.1+ XRC errors).
• Updated the embedded/generated resource content in main_xrc.py to match the corrected XRC.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/odemis/gui/xmlh/resources/panel_tab_fibsem.xrc	Removes the problematic alignment flags in the FIBSEM tab XRC layout to prevent XRC parsing errors.
src/odemis/gui/main_xrc.py	Mirrors the same flag removals in the pywxrc-generated embedded resources so runtime loading uses the corrected layout.