Fix #1517: UnnecessaryLocalRule for variable in a try-catch-with-resources statement

[subha0319]

Fixes #1517

The Problem:
UnnecessaryLocalRule was incorrectly flagging variables declared in a try-with-resources block as unnecessary if they were only referenced once inside the block. These variables cannot be inlined because they are required by Java syntax to ensure the resource is auto-closed.

The Solution:
Modified UnnecessaryLocalRule.java to check if the evaluated ASTVariableDeclarator is a descendant of an ASTResource node. If it is, the visitor returns early and ignores the variable.

Checklist

• Updated UnnecessaryLocalRule.java to ignore ASTResource variables.
• Added a valid test case representing the try-with-resources scenario.
• Ran mvn clean install locally and all static analysis checks and tests pass successfully.