Docs navigation fails on Safari

[planetf1]

When using Safari, anchor links do not work properly.

For example, go to https://egeria-project.org/concepts/discovery-analysis-report, scroll down and click on 'Data Class Annotation'.
This links to https://egeria-project.org/features/discovery-and-stewardship/overview/#data-class-discovery

If this link is clicked in safari, although the link goes to the right page, it does not correctly scroll to the correct location - or indeed scroll down at all.

This seems to affect all versions, including Ventura & Safari Technology Preview

In Chrome & Safari the links work correctly.

On digging, it appears this is caused by one of thge navigation features (navigation.instant). This is discussed in squidfunk/mkdocs-material#2881 and in the mkdocs docs at https://squidfunk.github.io/mkdocs-material/setup/setting-up-navigation/#instant-loading

Although this feature in theory speeds up navigation, I think the ability to work across browser is more important. It's not clear whether this is a safari bug, or a mkdocs bug (safari often keeps closer to standards, and can be less pragmatic)

This bug was introduced by:

94327250f (Nigel Jones         2022-01-11 19:56:27 +0000 834)     - navigation.instant

I therefore propose to revert.