Fix: HybridAnalysis hash search: switch POST to GET + add overview fallback (#2934)

[PranavShukla7]

Description

Fixes #2934

This PR updates the HybridAnalysis analyzer to support API changes introduced in
API v2.35.0, where the POST /search/hash endpoint was deprecated and replaced by a GET version.

The new GET endpoint returns a minimal response instead of a full SampleSummary.
To maintain backward compatibility, this PR adds a fallback request to
/overview/ to restore the previous output structure.

Type of change

• [✓] Bug fix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality to not work as expected).

Checklist

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