CI: Remove always-true conditions from cache actions

After 80517124a4, we must always provide
these paths now.

.github/actions/cache-restore/action.yml

@@ -42,7 +42,6 @@ runs:
     - name: 'Compiler Cache'
       uses: actions/cache/restore@v4
       id: 'ccache'
-      if: ${{ inputs.ccache_path != '' }}
       with:
         path: ${{ inputs.ccache_path }}
         key: '"ccache" | "${{ inputs.os }}" | "${{ inputs.arch }}" | "${{ inputs.toolchain }}" | "${{ inputs.cache_key_extra }}" | ${{ steps.date-stamp.outputs.timestamp }}'
@@ -50,7 +49,7 @@ runs:
           "ccache" | "${{ inputs.os }}" | "${{ inputs.arch }}" | "${{ inputs.toolchain }}" | "${{ inputs.cache_key_extra }}"
 
     - name: 'Configure Compiler Cache'
-      if: ${{ inputs.os != 'Windows' && inputs.ccache_path != '' }}
+      if: ${{ inputs.os != 'Windows' }}
       shell: bash
       env:
         CCACHE_DIR: ${{ inputs.ccache_path }}
@@ -64,7 +63,7 @@ runs:
           ccache -z
 
     - name: 'Configure Compiler Cache (Windows)'
-      if: ${{ inputs.os == 'Windows' && inputs.ccache_path != '' }}
+      if: ${{ inputs.os == 'Windows' }}
       shell: pwsh
       env:
         CCACHE_DIR: ${{ inputs.ccache_path }}
@@ -82,7 +81,6 @@ runs:
 
     - name: 'Restore vcpkg cache'
       uses: actions/cache/restore@v4
-      if: ${{ inputs.vcpkg_cache_path != '' }}
       id: 'vcpkg'
       with:
         path: ${{ inputs.vcpkg_cache_path }}

.github/actions/cache-save/action.yml

@@ -26,13 +26,11 @@ runs:
       shell: bash
       env:
         CCACHE_DIR: ${{ inputs.ccache_path }}
-      if: ${{ inputs.ccache_path != '' }}
       run: |
         ccache --evict-older-than=1d
 
     - name: 'Compiler Cache'
       uses: actions/cache/save@v4
-      if: ${{ inputs.ccache_path != '' }}
       with:
         path: ${{ inputs.ccache_path }}
         key: ${{ inputs.ccache_primary_key }}
@@ -41,13 +39,11 @@ runs:
       shell: bash
       env:
         CCACHE_DIR: ${{ inputs.ccache_path }}
-      if: ${{ inputs.ccache_path != '' }}
       run: |
         ccache -s
 
     - name: 'vcpkg binary cache'
       uses: actions/cache/save@v4
-      if: ${{ inputs.vcpkg_cache_path != '' }}
       with:
         path: ${{ inputs.vcpkg_cache_path }}
         key: ${{ inputs.vcpkg_cache_primary_key }}