Fix filtered search input width for IE

What does this MR do?

The filtered search input width should stretch to fill the container. This works in Chrome, Safari and Firefox but not in IE. This MR fixes the input field so that it stretches to fill the container in IE.

Are there points in the code the reviewer needs to double check?

Please test in all browsers

Why was this MR needed?

Fixes a regression

Does this MR meet the acceptance criteria?

• Changelog entry added, if necessary
• Tests
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #30856 (closed)

added ~149423 label

@annabeldunstone can you review?

/cc @twk3 @jameslopez, regression from 9.0

assigned to @annabeldunstone

Should we just add this to 9.1? I think we're already on 9.1.0 RC1

merged

mentioned in commit c68ea29d

I think it should be in both because a customer reported it

Since this has to be on both, I'm setting 9.1 as the milestone. We'll have to pick this into 9-0-stable too. /cc @godfat @felipe_artur @twk3

changed milestone to %9.1

I'll aim for 9.1 RC4 for now.

mentioned in issue #31059 (closed)

Picked into 9-1-stable, will go into 9.1.0-rc4

changed milestone to %9.0

mentioned in commit 30332e41

Picked into stable. Will be in 9.0.6.

mentioned in commit 3dc311ac