Fix addition of xml with strings

[poorna2152]

Purpose

Fixes #33066 Fixes #32976

Approach

Allow addition of xml values and a variable which is assignable to string type.

Samples

Remarks

Check List

• [ ] Read the Contributing Guide
• [ ] Updated Change Log
• [ ] Checked Tooling Support (#<Issue Number>)
• [ ] Added necessary tests
  • [ ] Unit Tests
  • [ ] Spec Conformance Tests
  • [ ] Integration Tests
  • [ ] Ballerina By Example Tests
• [ ] Increased Test Coverage
• [ ] Added necessary documentation
  • [ ] API documentation
  • [ ] Module documentation in Module.md files
  • [ ] Ballerina By Examples

[github-actions[bot]]

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[bot]]

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.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 77.39%. Comparing base (56ca67d) to head (62ba80c). Report is 524 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #42580      +/-   ##
============================================
- Coverage     77.39%   77.39%   -0.01%     
- Complexity    58335    58343       +8     
============================================
  Files          3453     3453              
  Lines        219064   219085      +21     
  Branches      28766    28771       +5     
============================================
+ Hits         169543   169555      +12     
- Misses        40182    40190       +8     
- Partials       9339     9340       +1     

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