Adding a space at the end of a redirect source address makes the rule fail

### Before opening, please confirm:

- [X] I have checked to see if my question is addressed in the [FAQ](https://github.com/aws-amplify/amplify-console/blob/master/FAQ.md).
- [X] I have [searched for duplicate or closed issues](https://github.com/aws-amplify/amplify-console/issues?q=is%3Aissue+).
- [X] I have read the guide for [submitting bug reports](https://github.com/aws-amplify/amplify-console/blob/master/CONTRIBUTING.md).
- [X] I have done my best to include a minimal, self-contained set of instructions for consistently reproducing the issue.

### App Id

_No response_

### Region

ca-central-1

### Amplify Console feature

Redirects

### Describe the bug

In the Amplify console Rewrites & redirects section, rules are not trimmed when entered. In particular, if a space is inadvertently added add the end of a source address, then that rewrite rule will fail. This was observed on the recommended SPA rewrite rule ` ` (notice the space at the end).

### Expected behavior

The redirect rule should forward normal URLS like `/about`, `/settings`, etc. to the desired source address. This does not occur if there is a space character at the end of the source address.

### Reproduction steps

1. Add a rewrite rule **with a space character** at the end (I have only tested this with the recommended SPA redirect source address).
2. Test it!

### Build Settings

_No response_

### Additional information

_No response_

The issue names the Amplify Console Rewrites & redirects feature but no repository file, test, or entry point. Start by locating the rule-input handling and its redirect tests, then reproduce the trailing-space case with the recommended SPA rule. Done means a trailing space no longer causes the redirect rule to fail, with coverage for the reported input.

Written by the indexing model from the issue text.