Update dropdowns in issue templates to have no option selected by default

This change updates the bug and feature templates to set the first option as empty.
This prevents form submission until an option is selected.

Signed-off-by: Marc Handalian <[email protected]>

Author: mch2

.github/ISSUE_TEMPLATE/bug_template.yml

@@ -15,7 +15,7 @@ body:
       description: Choose a specific OpenSearch component your bug belongs to.  If you are unsure which to select or if the component is not present, select "Other".
       multiple: false
       options:
-        - Other
+        - # Empty first option to force selection
         - Build
         - Clients
         - Cluster Manager
@@ -24,6 +24,7 @@ body:
         - Indexing:Replication
         - Indexing
         - Libraries
+        - Other
         - Plugins
         - Search:Aggregations
         - Search:Performance

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -22,7 +22,7 @@ body:
       description: Choose a specific OpenSearch component your feature request belongs to.  If you are unsure of which component to select or if the component is not present, select "Other".
       multiple: false
       options:
-        - Other
+        - # Empty first option to force selection
         - Build
         - Clients
         - Cluster Manager
@@ -31,6 +31,7 @@ body:
         - Indexing:Replication
         - Indexing
         - Libraries
+        - Other
         - Plugins
         - Search:Aggregations
         - Search:Performance