dont display generated file if there are no test functions passing for that file

[aseembits93]

PR Type

Enhancement

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Description

• Track generated tests count per file

• Integrate Counter for aggregation

• Filter by excluded test functions

• Prepare data for display decisions

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Diagram Walkthrough

flowchart LR
  A["behavior_test_results"] -- iterate --> B["filter unit tests and not removed"]
  B -- aggregate --> C["Counter: file_name -> count"]
  C -- supports --> D["display/decision logic downstream"]

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File Walkthrough

	Relevant files
Enhancement	function_optimizer.py Add Counter to tally generated tests per file                        codeflash/optimization/function_optimizer.py Import Counter alongside defaultdict. Build Counter mapping file to test count. Iterate behavior_test_results with filtering. Exclude removed test functions from counts. +8/-1

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[aseembits93]

#903 for reference