refactor: Set expected runtime config in error message when the used disk space during the spilling process has exceeded the allocation limit

[erenavsarogullari]

Which issue does this PR close?

• Closes Set expected runtime config in error message when the used disk space during the spilling process has exceeded the allocation limit #20373.

Rationale for this change

Minor refactoring on error message by exposing required config name for the end user. This is follow-up PR to both PR: #20226 and #20372 by runtime config: datafusion.runtime.max_temp_directory_size.

What changes are included in this PR?

Current:

The used disk space during the spilling process has exceeded the allowable limit of {}. Try increasing the `max_temp_directory_size` in the disk manager configuration.       

New:

The used disk space during the spilling process has exceeded the allowable limit of {}. \
Please try increasing the config: `datafusion.runtime.max_temp_directory_size`.",

Are these changes tested?

Yes, legacy UT case has been updated by covering expected config name.

Are there any user-facing changes?

Yes, error message has been updated which is exposed to end-users.