Afform - ensure default value data type matches input type

[colemanw]

Overview

Followup to #21606
Fixes mismatch between default value from the URL (which is always a string) and inputs for other types of values - numbers and search ranges.

Before

Url args don't seem to populate for number fields or range inputs.

After

Number fields work as expected. Range fields can be passed through the url with high and low values separated by - like /civicrm/test-form#?my_number_field=123-456

Screenshot is with #21645

[civibot]

(Standard links)

• If this is your first pull-request for CiviCRM, please browse CONTRIBUTING.md for information about the development and testing processes.
• If you are reviewing this pull-request, you may wish to consult the test sites and the Review Standards (long template, short template).

[eileenmcnaughton]

test this please

[eileenmcnaughton]

test fails are unrelated & this worked in my testing