ci: fix dx GLIBC incompatibility and remove branch gates

- Replace cargo-binstall with cargo install for dioxus-cli to avoid
  GLIBC 2.38/2.39 requirement on Bookworm (GLIBC 2.36)
- Run bun install in Dockerfile for DaisyUI/Tailwind dependencies
- Remove branch gates on build-and-push and changelog jobs for testing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -103,9 +103,6 @@ jobs:
     name: Build & Push Image
     runs-on: docker
     needs: [test]
-    if: >-
-      github.event_name == 'push' &&
-      (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/'))
     steps:
       - name: Checkout
         run: |
@@ -150,9 +147,6 @@ jobs:
     name: Changelog
     runs-on: docker
     needs: [test]
-    if: >-
-      github.event_name == 'push' &&
-      (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/'))
     container:
       image: rust:1.89-bookworm
     steps: