Adding test for legacy checkpoint created with 2.5.3 (#21066)

[create-pull-request] automated change

Co-authored-by: Borda <[email protected]>
Co-authored-by: Jirka Borovec <[email protected]>
(cherry picked from commit 5a2b678)

Author: pl-ghost

tests/legacy/back-compatible-versions.txt

@@ -106,3 +106,4 @@
 2.3.3
 2.5.1
 2.5.2
+2.5.3