Refactor conditionals in action workflows to remove unnecessary syntax

[javidahmed64592]

This pull request updates the conditional syntax used in GitHub Actions workflow and composite action files. The main improvement is switching from the older ${{ ... }} expression syntax to the newer, simpler if: github.event.repository.name == 'template-python' style. This change makes the workflow definitions cleaner and more consistent.

Updates to conditional syntax in workflow files:

• .github/workflows/build.yml: Changed all if conditions to use the new syntax for both build-wheel and verify-structure jobs.
• .github/workflows/ci.yml: Updated if conditions for all CI jobs (validate-pyproject, ruff, mypy, pytest, bandit, pip-audit, version-check) to use the new syntax.

Updates to conditional syntax in composite actions:

• .github/actions/build/build-wheel/action.yml: Updated if conditions for installing Python core dependencies.
• .github/actions/build/verify-structure/action.yml: Updated if conditions for installing Python core dependencies.
• .github/actions/ci/bandit/action.yml, .github/actions/ci/mypy/action.yml, .github/actions/ci/pip-audit/action.yml, .github/actions/ci/pytest/action.yml, .github/actions/ci/ruff/action.yml, .github/actions/ci/validate-pyproject/action.yml, .github/actions/ci/version-check/action.yml: Updated if conditions for installing Python dev dependencies. [1] [2] [3] [4] [5] [6] [7]

Updates to setup actions:

• .github/actions/setup/install-python-core/action.yml, .github/actions/setup/install-python-dev/action.yml: Updated if conditions for installing UV Python dependencies. [1] [2]