testsuite: Add more allocation size tests for conjured svalues [PR110014]

This patch adds the reproducers reported in PR 110014 as test cases. The
false positives in those cases are already fixed with PR 109577.

2023-06-09  Tim Lange  <mail@tim-lange.me>

	PR analyzer/110014

gcc/testsuite/ChangeLog:

	* gcc.dg/analyzer/realloc-pr110014.c: New tests.