AwaitsFix IntegTestZipClientYamlTestSuiteIT#indices.split tests

there are two tests that have failed multiple times in one day on windows CI.

This commit AwaitsFixes them until their timeout issues are resolved.

tracking here: https://github.com/elastic/elasticsearch/issues/30503

rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/10_basic.yml

@@ -103,9 +103,13 @@ setup:
 
 ---
 "Split from 1 to N":
+#  - skip:
+#      version: " - 6.99.99"
+#      reason: Added in 7.0.0
+# uncomment once AwaitsFix is resolved
   - skip:
-      version: " - 6.99.99"
-      reason: Added in 7.0.0
+      version: "all"
+      reason: "AwaitsFix'ing, see https://github.com/elastic/elasticsearch/issues/30503"
   - do:
       indices.create:
         index: source_one_shard

rest-api-spec/src/main/resources/rest-api-spec/test/indices.split/20_source_mapping.yml

@@ -1,8 +1,12 @@
 ---
 "Split index ignores target template mapping":
+#  - skip:
+#      version: " - 6.0.99"
+#      reason: Added in 6.1.0
+# uncomment once AwaitsFix is resolved
   - skip:
-      version: " - 6.0.99"
-      reason: Added in 6.1.0
+      version: "all"
+      reason: "AwaitsFix'ing, see https://github.com/elastic/elasticsearch/issues/30503"
 
   # create index
   - do: