analyzer: fix ICE on region creation during get_referenced_base_regions [PR108003]

gcc/analyzer/ChangeLog:
	PR analyzer/108003
	* call-summary.cc
	(call_summary_replay::convert_region_from_summary_1): Convert
	heap_regs_in_use from auto_sbitmap to auto_bitmap.
	* region-model-manager.cc
	(region_model_manager::get_or_create_region_for_heap_alloc):
	Convert from sbitmap to bitmap.
	* region-model-manager.h: Likewise.
	* region-model.cc
	(region_model::get_or_create_region_for_heap_alloc): Convert from
	auto_sbitmap to auto_bitmap.
	(region_model::get_referenced_base_regions): Likewise.
	* region-model.h: Include "bitmap.h" rather than "sbitmap.h".
	(region_model::get_referenced_base_regions): Convert from
	auto_sbitmap to auto_bitmap.

gcc/testsuite/ChangeLog:
	PR analyzer/108003
	* g++.dg/analyzer/pr108003.C: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>