Fix XML navigation result when namespace is declared in a statement after the the expression

[poorna2152]

Purpose

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Fixes #42185
Fixes #42200

Approach

Save the namespace symbol of the BLangXMLElementFilter expression in the TypeChecker phase using the set of visible namespaces and use that information in the Desugar phase to expand the filter name. Accessing the set of namespaces in the Desugar phase provides namespaces that are defined after the filter expression declaration.

Samples

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Remarks

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Check List

• Read the Contributing Guide
• Updated Change Log
• Checked Tooling Support (#)
• 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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.50%. Comparing base (37b79d9) to head (ace31bb).
Report is 24 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #42217   +/-   ##
=========================================
  Coverage     76.50%   76.50%           
- Complexity    53173    53184   +11     
=========================================
  Files          2892     2892           
  Lines        200992   201000    +8     
  Branches      26186    26189    +3     
=========================================
+ Hits         153769   153783   +14     
+ Misses        38763    38759    -4     
+ Partials       8460     8458    -2     

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