Bootstrap: wheel is not needed

Also, test this on the CI.

[skip changelog]

python-pip.spec

@@ -136,7 +136,6 @@ BuildRequires:  python%{python3_pkgversion}-devel
 BuildRequires:  python3-rpm-generators >= 11-8
 BuildRequires:  pyproject-rpm-macros
 BuildRequires:  python%{python3_pkgversion}-setuptools
-BuildRequires:  python%{python3_pkgversion}-wheel
 BuildRequires:  bash-completion
 BuildRequires:  ca-certificates
 Requires:       ca-certificates

tests/tests.yml

@@ -1,5 +1,13 @@
 ---
 - hosts: localhost
+  tags:
+  - classic
+  pre_tasks:
+  - import_role:
+      name: standard-test-source
+    vars:
+      fetch_only: True
+
   roles:
   - role: standard-test-basic
     tags:
@@ -49,6 +57,9 @@
     - smoke314_virtualenv:
         dir: python/smoke
         run: VERSION=3.14 METHOD=virtualenv ./venv.sh
+    - mock_bootstrap_build:
+        dir: .
+        run: pyproject-rpm-macros/tests/mocktest.sh python-pip --without tests --without doc
     - pyproject_pytest:
         dir: pyproject-rpm-macros/tests
         run: ./mocktest.sh python-pytest