Change tool run confirmation to just Enter, vs. "y" + Enter

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

macOS 15.3.1 (24D70)

### Expected behaviour

Most tool suggestions made by Q CLI makes sense, so it'd be better if I can quickly review the suggestion and just hit the Enter key to execute the tool.

### Actual behaviour

The current behavior is that for a tool to be run, the user first needs to type "y" and then hit Enter. "y" is in the middle of the keyboard so it's a bit of a pain to hit that first and then hit Enter, especially since there could be several tool invocations in quick succession, and running the tool is the action I want to take most of the time.

The current message is:
```
Enter y to run this tool, otherwise continue chatting.
```

This could perhaps be changed to:
```
Hit Enter to run this tool, otherwise continue chatting.
```

### Steps to reproduce

_No response_

### Environment

```yaml
[q-details]
version = "1.7.1"
hash = "7d766a2d0580db62fae5a4bc2e6eb63946d4d08e"
date = "2025-03-14T22:08:03.470338Z (5d ago)"
variant = "full"

[system-info]
os = "macOS 15.3.1 (24D70)"
chip = "Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz"
total-cores = 4
memory = "16.00 GB"

[environment]
cwd = "/Users/USER/Dev/llm-cli"
cli-path = "/Users/USER/Dev/llm-cli"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "macOS"
install-method = "brew"

[env-vars]
PATH = "/Users/USER/Library/Python/3.9/bin:/usr/local/bin:/usr/local/sbin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/USER/.local/bin:/usr/local/bin:/Users/USER/.toolbox/bin"
QTERM_SESSION_ID = "35ca5b4967ab47c6bbbe4c1bf6fbfc5f"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.7.1"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
__CFBundleIdentifier = "com.apple.Terminal"
```