fix(techdocs): remove footer overlay on large screen

Uses static positions on the child links instead of the container
Resolves #15653

Signed-off-by: Damien Vitrac <dvitrac@vmware.com>

.changeset/nervous-apricots-whisper.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs': patch
+---
+
+Improve view: remove footer overlay on large screen

plugins/techdocs/src/reader/transformers/styles/rules/layout.ts

@@ -105,7 +105,13 @@ export default ({ theme, sidebar }: RuleOptions) => `
 .md-footer {
   position: fixed;
   bottom: 0px;
+  pointer-events: none;
 }
+
+.md-footer-nav__link {
+  pointer-events: all;
+}
+
 .md-footer__title {
   background-color: unset;
 }