Support union type for XMl data module

[SasinduDilshara]

Support union type for XMl data module

fixes ballerina-platform/ballerina-library#6596

[codecov]

Codecov Report

Attention: Patch coverage is 79.38931% with 54 lines in your changes missing coverage. Please review.

Project coverage is 85.79%. Comparing base (a32e34e) to head (543b0a6).
Report is 19 commits behind head on main.

Files	Patch %	Lines
...io/ballerina/lib/data/xmldata/utils/DataUtils.java	79.54%	20 Missing and 7 partials ⚠️
...o/ballerina/lib/data/xmldata/xml/XmlTraversal.java	80.00%	13 Missing and 7 partials ⚠️
...llerina/lib/data/xmldata/xml/QualifiedNameMap.java	0.00%	5 Missing ⚠️
.../xmldata/compiler/XmldataRecordFieldValidator.java	83.33%	0 Missing and 1 partial ⚠️
...a/io/ballerina/lib/data/xmldata/xml/XmlParser.java	93.75%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main      #43      +/-   ##
============================================
- Coverage     86.46%   85.79%   -0.67%     
- Complexity      556      562       +6     
============================================
  Files            25       25              
  Lines          2416     2591     +175     
  Branches        529      564      +35     
============================================
+ Hits           2089     2223     +134     
- Misses          187      218      +31     
- Partials        140      150      +10     

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[github-actions]

This PR has been open for more than 15 days with no activity. This will be closed in 3 days unless the stale label is removed or commented.

[github-actions]

Closed PR due to inactivity for more than 18 days.