Normalize emitted ctrace reference data types

[Copilot]

ctrace-ref.data-type could receive DWARF-derived categories outside the supported signed, unsigned, and float values.

• Emission normalization
  • Preserve supported values.
  • Emit unsigned for every other type.
  • Add info with the actual discovered symbol type.

data-type: unsigned
info: "data-type defaulted to unsigned for symbol type 'pointer'"

• Regression coverage
  • Covers preservation of all supported values.
  • Updates fallback expectations for func and object, including generation-failure paths.

• Fixes Review emitted data-type values #35

[qltysh]

Coverage Impact

This PR will not change total coverage.

Modified Files with Diff Coverage (1)

Rating	File	% Diff	Uncovered Line #s
	src/pyts/coresight/generator.py	100.0%
	Total	100.0%

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