HTM-1321: Make Solr schema creation more robust

[mprins]

[codecov]

Codecov Report

Attention: Patch coverage is 91.52542% with 5 lines in your changes missing coverage. Please review.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...c/main/java/org/tailormap/api/solr/SolrHelper.java	92%	4 Missing and 1 partial ⚠️

@@          Coverage Diff           @@
##             main   #1029   +/-   ##
======================================
- Coverage      76%     76%   -0%     
  Complexity     86      86           
======================================
  Files         113     113           
  Lines        5222    5237   +15     
  Branches      460     459    -1     
======================================
+ Hits         3920    3931   +11     
- Misses       1057    1061    +4     
  Partials      245     245           

Files with missing lines	Coverage Δ	Complexity Δ
...c/main/java/org/tailormap/api/solr/SolrHelper.java	82% <92%> (-<1%)	0 <0> (ø)

[github-actions]

Test Results

292 tests  ±0   291 ✅ ±0   3m 19s ⏱️ +5s
 31 suites ±0     1 💤 ±0 
 31 files   ±0     0 ❌ ±0 

Results for commit 6e9bfdb. ± Comparison against base commit b836cc2.

♻️ This comment has been updated with latest results.