Lsan leak fixes

[well-mannered-goat]

Your checklist for this pull request

• I've read the guidelines for contributing to this repository.
• I made sure to follow the project's coding style.
• I've documented every RZ_API function and struct this PR changes.
• I've added tests that prove my changes are effective (required for changes to RZ_API).
• I've updated the Rizin book with the relevant information (if needed).
• I've used AI tools to generate fully or partially these code changes and I'm sure the changes are not copyrighted by somebody else.

Detailed description

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Test plan

getting CI error because of leaks in #6487

• rizin:agraph (Test 30) done
• rizin:cmd (Test 32) done
• rizin:float (Test 54) done
• rizin:il_validate (Test 66)
• rizin:il_vm (Test 67)
• rizin:itv (Test 70)
• rizin:regex (Test 89)
• rizin:serialize_types (Test 109)
• rizin:tokens (Test 127)
• rizin:bin (Test 128)
• rizin:type (Test 130)
• rizin:analysis_global_var (Test 134)

trying to fix as many as i can
Closing issues

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 49.93%. Comparing base (6f630b7) to head (73c7948).
⚠️ Report is 11 commits behind head on dev.

Additional details and impacted files

Files with missing lines	Coverage Δ
librz/core/agraph.c	45.53% <100.00%> (+0.02%)	⬆️
librz/util/float/float.c	68.26% <100.00%> (+0.03%)	⬆️
librz/util/itv.c	70.17% <100.00%> (+1.65%)	⬆️

... and 36 files with indirect coverage changes

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