build: enable merging of default shell_env and env in Bazel

This is necessary to support later versions of e.g. `rules_ts`.

Author: devversion

.bazelrc

@@ -2,6 +2,9 @@
 common --@aspect_rules_ts//ts:skipLibCheck=always
 common --@aspect_rules_ts//ts:default_to_tsc_transpiler
 
+# Needed as otherwise `env` of TS actions would be ignored.
+common --incompatible_merge_fixed_and_default_shell_env
+
 ###############################
 # Filesystem interactions     #
 ###############################