Fix LT-22525 (pass 2)

[AndyBlack]

When using the TonePars with FLEx utility and the data has one or more procltics or enclitics, one could get an empty/blank HVO value for the clitic with a resulting crash.

This has two fixes:

1. A check for an empty HVO which is skipped like other data items that are not found in the database (in XAmpleParser.cs).
2. For XAmple-produced input to TonePars, skip the Prt "category" as well as the W "category" in the ANA line (in ToneParsInvoker.cs).

While doing this, I happened to notice that there was a case of some code that was no longer needed now that this utility is part of FLEx. See MorpherAnaProducer.cs and XAmpleMorpherAnaProducer.cs.

Finally, I also realized that every segment listed in the UI could be processed. I had been blocking ones that did not have every word with an analysis. That is needed for PcPatr with FLEx, but not for TonePars with FLEx. See ToneParsFLExForm.cs.

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This change is 

[github-actions]

NUnit Tests

    1 files  ±0      1 suites  ±0   7m 7s ⏱️ - 3m 41s
4 306 tests ±0  4 233 ✅ ±0  73 💤 ±0  0 ❌ ±0 
4 315 runs  ±0  4 242 ✅ ±0  73 💤 ±0  0 ❌ ±0 

Results for commit 1f05592. ± Comparison against base commit 9b7d537.

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 32.99%. Comparing base (9b7d537) to head (1f05592).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
Src/LexText/ParserCore/XAmpleParser.cs	0.00%	3 Missing and 1 partial ⚠️
...ies/pcpatrflex/ToneParsFLExDll/ToneParsFLExForm.cs	0.00%	1 Missing ⚠️
...ties/pcpatrflex/ToneParsFLExDll/ToneParsInvoker.cs	0.00%	0 Missing and 1 partial ⚠️
...trflex/ToneParsFLExDll/XAmpleMorpherAnaProducer.cs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1020   +/-   ##
=======================================
  Coverage   32.99%   32.99%           
=======================================
  Files        1202     1202           
  Lines      278209   278189   -20     
  Branches    37160    37158    -2     
=======================================
  Hits        91789    91789           
+ Misses     158563   158544   -19     
+ Partials    27857    27856    -1     

Files with missing lines	Coverage Δ
...s/pcpatrflex/ToneParsFLExDll/MorpherAnaProducer.cs	0.00% <ø> (ø)
...ies/pcpatrflex/ToneParsFLExDll/ToneParsFLExForm.cs	0.00% <0.00%> (ø)
...ties/pcpatrflex/ToneParsFLExDll/ToneParsInvoker.cs	0.00% <0.00%> (ø)
...trflex/ToneParsFLExDll/XAmpleMorpherAnaProducer.cs	0.00% <0.00%> (ø)
Src/LexText/ParserCore/XAmpleParser.cs	58.40% <0.00%> (-0.68%)	⬇️

... and 2 files with indirect coverage changes

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