[ci] Restrict MemBrowse workflows to the main repository

Author: CYFS3

.github/workflows/membrowse-comment.yml

@@ -10,6 +10,7 @@ jobs:
   comment:
     runs-on: ubuntu-22.04
     if: >
+      github.repository == 'RT-Thread/rt-thread' &&
       github.event.workflow_run.event == 'pull_request' &&
       github.event.workflow_run.conclusion != 'cancelled' &&
       github.event.workflow_run.conclusion != 'skipped'

.github/workflows/membrowse-onboard.yml

@@ -11,6 +11,7 @@ on:
 
 jobs:
   load-targets:
+    if: ${{ github.repository == 'RT-Thread/rt-thread' }}
     runs-on: ubuntu-22.04
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}

.github/workflows/membrowse-report.yml

@@ -38,6 +38,7 @@ concurrency:
 
 jobs:
   load-targets:
+    if: ${{ github.repository == 'RT-Thread/rt-thread' }}
     runs-on: ubuntu-22.04
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}