Fix LT-22649

[AndyBlack]

Both PcPatr with FLEx and TonePars with FLEx added new unowned lists (as well as some custom fields). They never broadcast this fact, though. This code fixes that (and does some cleanup, too).
It also fixes the crashes reported in https://jira.sil.org/browse/LT-22649.

It is basically just adding a PropertyTable instance so we can publish the change via
FwUtils.Publisher.Publish(new PublisherParameterObject(EventConstants.MasterRefresh, null, PropTable.GetWindow()));

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This change is 

[github-actions]

NUnit Tests

    1 files      1 suites   7m 45s ⏱️
5 799 tests 5 718 ✅ 81 💤 0 ❌
5 808 runs  5 727 ✅ 81 💤 0 ❌

Results for commit 70f4b91.

♻️ This comment has been updated with latest results.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 38.28%. Comparing base (b857373) to head (70f4b91).
⚠️ Report is 27 commits behind head on main.

Files with missing lines	Patch %	Lines
...ies/pcpatrflex/ToneParsFLExDll/ToneParsFLExForm.cs	0.00%	2 Missing ⚠️
...tilities/pcpatrflex/ToneParsFLExDll/FLExUtility.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1080      +/-   ##
==========================================
+ Coverage   38.04%   38.28%   +0.24%     
==========================================
  Files        1499     1499              
  Lines      350117   350238     +121     
  Branches    40233    40261      +28     
==========================================
+ Hits       133196   134104     +908     
+ Misses     187634   186915     -719     
+ Partials    29287    29219      -68     

Files with missing lines	Coverage Δ
Src/Utilities/pcpatrflex/PrepFLExDBDll/Preparer.cs	98.11% <100.00%> (+0.03%)	⬆️
...tilities/pcpatrflex/ToneParsFLExDll/FLExUtility.cs	0.00% <0.00%> (ø)
...ies/pcpatrflex/ToneParsFLExDll/ToneParsFLExForm.cs	0.00% <0.00%> (ø)

... and 149 files with indirect coverage changes

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[papeh]

There may be some overlap between this and #1075

[papeh]

Looks good overall, but tests should dispose their disposables.

[AndyBlack]

There may be some overlap between this and #1075

Ah, I was not aware of Jason doing this. I'll happily wait until that PR is merged. When it is, I'll see if it solves the crashes for https://jira.sil.org/browse/LT-22649 and https://jira.sil.org/browse/LT-22708.
Also, thanks for noticing the other issues, Hasso. I'll address them as needed later.