mesa/main: *TextureSubImage* generates INVALID_OPERATION on wrong target

mesa/main: *TextureSubImage* generates INVALID_OPERATION on wrong target

Equivalent *TexSubImage* methods generates INVALID_ENUM.

From OpenGL 4.5 spec, section 8.6 Alternate Texture Image
Specification Commands:

   "An INVALID_ENUM error is generated by *TexSubImage* if target does
    not match the command, as shown in table 8.15."

And:

   "An INVALID_OPERATION error is generated by *TextureSubImage* if
    the effective target of texture does not match the command, as
    shown in table 8.15."

Fixes:
GL45-CTS.direct_state_access.textures_copy_errors

v2: slightly change commit summary (Samuel)

Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>