Fix missing style violation report for package instantiation

Fix missing style violation report for package instantiation

Unlike for subprogram instantiation, -gnatyr does not report style violation
for package instantiation, more precisely for the generic package's name.

Fixing it uncovered style violations in the sources of the compiler itself!

gcc/ada/
	PR ada/122295
	* sem_ch12.adb (Analyze_Package_Instantiation): Force Style_Check
	to False only after possibly installing the parent.
	* aspects.adb (UAD_Pragma_Map): Fix style violation.
	* inline.adb (To_Pending_Instantiations): Likewise.
	* lib.ads (Unit_Names): Likewise.
	* repinfo.adb (Relevant_Entities): Likewise.
	* sem_ch7.adb (Subprogram_Table): Likewise.
	(Traversed_Table): Likewise.
	* sem_util.adb (Interval_Sorting): Likewise.

gcc/testsuite/
	* gnat.dg/specs/style1.ads: New test.