Gitea: update issue template with new scoped labels and other tweaks

.gitea/issue_template/bug.yaml

@@ -1,13 +1,13 @@
 name: Add-on Bug Report
 about: File a bug report for an add-on bundled with Blender
 labels:
-  - bug
+  - type::Report
 body:
   - type: markdown
     attributes:
       value: |
                 ### Instructions
-                First time reporting? See [tips](https://wiki.blender.org/wiki/Process/Bug_Reports) and [walkthrough video](https://www.youtube.com/watch?v=JTD0OJq_rF4).
+                First time reporting? See [tips](https://wiki.blender.org/wiki/Process/Bug_Reports).
 
                 * Use **Help > Report a Bug** in Blender to fill system information and exact Blender version.
                 * Test [daily builds](https://builder.blender.org/) to verify if the issue is already fixed.
@@ -19,6 +19,7 @@ body:
     id: body
     attributes:
       label: "Description"
+      hide_label: true
       value: |
                **System Information**
                Operating system:

.gitea/pull_request_template.yaml

@@ -16,6 +16,7 @@ body:
     id: body
     attributes:
       label: "Description"
+      hide_label: true
       value: |
                Description of the problem that is addressed in the patch.