Fix spread-field error in connection pool config

[kalaiyarasiganeshalingam]

Purpose

$Subject

Fixes:
https://github.com/wso2-enterprise/internal-support-ballerina/issues/349
ballerina-platform/ballerina-library#4594

Examples

Checklist

• Linked to an issue
• Updated the specification
• Updated the changelog
• Added tests
• Checked native-image compatibility

[codecov]

Codecov Report

Patch coverage: 73.75% and project coverage change: -0.48 ⚠️

Comparison is base (e7f5d51) 80.75% compared to head (0eb5442) 80.27%.

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #948      +/-   ##
============================================
- Coverage     80.75%   80.27%   -0.48%     
- Complexity       98      123      +25     
============================================
  Files            20       20              
  Lines           478      578     +100     
  Branches         86      117      +31     
============================================
+ Hits            386      464      +78     
- Misses           59       64       +5     
- Partials         33       50      +17     

Impacted Files	Coverage Δ
...java/io/ballerina/stdlib/mysql/compiler/Utils.java	67.72% <67.50%> (-9.56%)	⬇️
...ql/compiler/analyzer/InitializerParamAnalyzer.java	87.32% <92.30%> (+23.83%)	⬆️
...stdlib/mysql/compiler/analyzer/RecordAnalyzer.java	74.35% <100.00%> (ø)

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