Incorrect license detection

[pombredanne]

Incorrect license detection in
https://raw.githubusercontent.com/numpy/numpy/refs/tags/v1.16.6/numpy/core/src/multiarray/dragon4.c

See the exception.

See also:

• Investigate Definition and Notice Discrepancies in Integration Tests clearlydefined/operations#153 (comment)

[AyanSinhaMahapatra]

This needs a false-positive rule and also https://github.com/aboutcode-org/scancode-toolkit/blob/develop/src/licensedcode/data/rules/license-intro_8.RULE probably needs to be a license clue (we now treat clues similarly like license intros in terms of match aggregation, but license clues if present alone, are not considered as detections, but clues so it does not reflect in the license expresion).