Add runtime tests for ICU code paths in formatting functions

[HenrikPaetzold]

This Pull Request adds runtime tests for the ICU interface, built from the example tables in
the F&O 3.1 specification. Expected values are derived from the spec and from CLDR.

Several things that failed, have been fixed:

• [F] and [P] ignored their default presentation modifier n, returning an abbreviation
  resp. a hard-coded string instead of a name.
• Name width handling was wrong in three ways: no padding to the minimum, abbreviating even
  when the full name fitted the maximum, and accepting an abbreviation below the minimum
  (German [MN,3-3] gave J instead of Jan).
• CLDR soft hyphens (U+00AD) leaked into German and Italian numerals, breaking eq and
  string-length on results that looked correct.
• An uninterpretable o(...) specifier fell back to cardinals in fr/it/es but to ordinals in
  de/en, purely from how CLDR names its rule sets.
• AH used ICU's astronomical Islamic calendar; the tabular variant matches the spec example.

[github-actions]

QT3 Test Results - Parser: jsoniq

Regression baseline: run 31613200034

🎉 No regressions found for this build.

Summary of passed tests for jsoniq

Test Suite	Passing	Failing	Errors	Skipped	Total
app	1984	39	127	7	2157
array	207	0	1	1	209
fn	10024	381	232	498	11135
map	220	0	0	0	220
math	149	0	0	0	149
misc	700	77	34	60	871
op	4192	63	70	41	4366
prod	10344	569	465	829	12207
ser	321	21	1	0	343
xs	147	6	0	11	164
Total	28288	1156	930	1447	31821

Full analysis report: see analysis-jsoniq in artifacts.

Download detailed test results

[github-actions]

QT3 Test Results - Parser: xquery

Regression baseline: run 31613200034

🎉 No regressions found for this build.

Summary of passed tests for xquery

Test Suite	Passing	Failing	Errors	Skipped	Total
app	2024	38	88	7	2157
array	207	0	1	1	209
fn	10078	343	216	498	11135
map	220	0	0	0	220
math	149	0	0	0	149
misc	719	64	28	60	871
op	4284	14	27	41	4366
prod	10571	442	365	829	12207
ser	343	0	0	0	343
xs	153	0	0	11	164
Total	28748	901	725	1447	31821

Full analysis report: see analysis-xquery in artifacts.

Download detailed test results