Switch to webpack SVG paths for runner empty state

What does this MR do and why?

This change swaps the Rails provided paths for SVG images for paths provided by Webpack ?url resource query.

This helps simplify way we import SVG paths into the empty states in the runner area.

Screenshots or screen recordings

Admin > CI/CD > Runners http://gdk.test:3000/admin/runners

empty state	no results state

Note: To test the "empty state" illustration I used the following diff:

diff --git a/app/assets/javascripts/ci/runner/admin_runners/admin_runners_app.vue b/app/assets/javascripts/ci/runner/admin_runners/admin_runners_app.vue
index 4d88feebe53b..4183b4dacf4d 100644
--- a/app/assets/javascripts/ci/runner/admin_runners/admin_runners_app.vue
+++ b/app/assets/javascripts/ci/runner/admin_runners/admin_runners_app.vue
@@ -86,7 +86,8 @@ export default {
       update(data) {
         const { runners } = data;
         return {
-          items: runners?.nodes || [],
+          items: [],
+          // items: runners?.nodes || [],
           pageInfo: runners?.pageInfo || {},
         };
       },

Group > CI/CD > Runners http://gdk.test:3000/groups/gnuwget/-/runners

empty state	no results state

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