Add a test and changelog for non-string host names in yaml inventory files (#77569)

changelogs/fragments/77544-fix-error-yaml-inventory-int-hostnames.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - yaml inventory plugin - fix the error message for non-string hostnames (https://github.com/ansible/ansible/issues/77519).

test/integration/targets/inventory_yaml/runme.sh

@@ -2,3 +2,5 @@
 
 # handle empty/commented out group keys correctly https://github.com/ansible/ansible/issues/47254
 ANSIBLE_VERBOSITY=0 diff -w <(ansible-inventory -i ./test.yml --list) success.json
+
+ansible-inventory -i ./test_int_hostname.yml --list 2>&1 | grep 'Host pattern 1234 must be a string'

test/integration/targets/inventory_yaml/test_int_hostname.yml

@@ -0,0 +1,5 @@
+all:
+  children:
+    kids:
+      hosts:
+        1234: {}