fix[e2e]: different checking logic for server url

e2e/action.yml

@@ -39,28 +39,28 @@ runs:
         path: OctoPrint
 
     - name: 🏗 Set up Python ${{ inputs.python }}
-      if: ${{ inputs.server }} === ""
+      if: ${{ !inputs.server }}
       uses: actions/setup-python@v5
       with:
         python-version: ${{ inputs.python }}
 
     - name: 🏗 Install OctoPrint
-      if: ${{ inputs.server }} === ""
+      if: ${{ !inputs.server }}
       working-directory: ./OctoPrint/
       shell: bash
       run: |
         pip install ${{ inputs.octoprint }}
         [ -z "${{ inputs.deps }}" ] || pip install --force-reinstall ${{ inputs.deps }}
 
     - name: 🏗 Create base config for test server
-      if: ${{ inputs.server }} === ""
+      if: ${{ !inputs.server }}
       shell: bash
       run: |
         mkdir e2econfig
         cp -r OctoPrint/.github/fixtures/with_acl/* e2econfig
 
     - name: 🏗 Install mfa dummy plugin if available
-      if: ${{ inputs.server }} === ""
+      if: ${{ !inputs.server }}
       shell: bash
       run: |
         mfa_dummy="OctoPrint/.github/fixtures/mfa_dummy"
@@ -104,7 +104,7 @@ runs:
         npx playwright install-deps
 
     - name: 🎭 Start server and run Playwright
-      if: ${{ inputs.server }} === ""
+      if: ${{ !inputs.server }}
       working-directory: ./OctoPrint/tests/playwright
       shell: bash
       run: |
@@ -114,7 +114,7 @@ runs:
         TEST_MFA: ${{ env.TEST_MFA }}
 
     - name: 🎭 Run Playwright against existing server
-      if: ${{ inputs.server }} !== ""
+      if: ${{ inputs.server }}
       working-directory: ./OctoPrint/tests/playwright
       shell: bash
       run: |