arg: try fixing test-args-parser randomly fails (#24826)

• arg: try fixing test-args-parser randomly fails

• return ref

• try triggering the workflow

• exception wrapper

• wip

• test

• test 2

• arg: guard win32 utf8 argv override

make_utf8_argv rebuilds argv from GetCommandLineW to fix utf8 handling of non ascii arguments on windows. the override runs unconditionally inside common_params_parse, so it also clobbers a programmatic argv passed by a caller. test-arg-parser builds a synthetic argv but then sees the real process command line instead, the model argument is never parsed, and the assert that expects success aborts via fastfail (0xC0000409). this shows up as a random failure in the openvino windows workflow.

only override argv when its length matches the caller argc, so the utf8 repair still applies to real binaries while a programmatic argv stays intact.

Co-authored-by: Pascal [email protected]