Re-fix boolean and number input types

What does this MR do and why?

This MR re-adds the fix that prevents boolean and number types being cast to strings. The original fix caused an incident because it did not account for multiple interpolation blocks in a single node and was only interpolating the first block. This MR updates the interpolation logic to use scan instead of match so we interpolate all blocks.

Changelog: fixed

Issue: #434826 (closed)

Screenshots or screen recordings

Before	After

How to set up and validate locally

1. Enable the ci_fix_input_types feature flag

2. Create an included.yml file in the root directory of a project. Give it the following content

   spec:
     inputs:
       a:
       b:
       c:
   ---
   my-job:
     script: echo "$[[ inputs.a ]] $[[ inputs.b ]] $[[ inputs.c ]]"

3. Put this content in the pipeline editor:

   include:
     - local: included.yml  
       inputs:
         a: 'a'
         b: 'b'
         c: 'c'

4. See that the Full configuration tab shows the echo statement as echo "a b c"