PreToolUse hooks not called for Read tool when file doesn't exist

PreToolUse hooks are **not invoked** when Claude calls the `Read` tool with a file path that doesn't exist. The hook is only called when the file exists. This contradicts the [official documentation](https://code.claude.com/docs/en/hooks) which states that PreToolUse hooks execute "after Claude creates tool parameters and **before processing the tool call**".

This breaks legitimate use cases like path translation where hooks need to modify file paths before validation occurs.

## Expected Behavior

According to the documentation, PreToolUse hooks should be called **before** the tool processes the call, allowing hooks to:
- Validate inputs
- Modify tool parameters using `updatedInput`
- Block execution with `permissionDecision: "deny"`

The hook should be invoked **regardless of whether the file exists**.

## Actual Behavior

When Claude calls `Read` with a non-existent file path:
1. The SDK validates that the file doesn't exist
2. The SDK returns "File does not exist" error
3. **The PreToolUse hook is never called**

When Claude calls `Read` with an existing file path:
1. The PreToolUse hook is called ✅
2. The file is read successfully ✅

## Reproduction

See the minimal reproduction script: [reproduce_hook_bug.py](https://gist.github.com/feroult/731c564f7920859d9dec2e47a358fa11)

**Run it:**
```bash
pip install claude-agent-sdk
python reproduce_hook_bug.py
```

**Expected output:**
```
[HOOK CALLED] for TEST 1 (/workspace/test.txt)
[HOOK CALLED] for TEST 2 (/tmp/hook_test/test.txt)
```

**Actual output:**
```
[HOOK CALLED] for TEST 2 only (/tmp/hook_test/test.txt)
```

## Environment

- **Claude Code**: 2.0.35 (latest)
- **claude-agent-sdk**: 0.1.6 (latest - tested on 0.1.4, 0.1.5, 0.1.6)
- **Python**: 3.11
- **OS**: Linux

## Impact

This bug breaks:
1. **Path translation hooks** - Cannot translate paths like `/workspace/*` to actual locations before validation
2. **Custom file resolution** - Cannot implement custom file lookup logic
3. **Input sanitization** - Cannot normalize/validate file paths before they're checked
4. **Audit logging** - Cannot log all Read attempts, only successful ones

The `updatedInput` feature is essentially useless for file path modification because hooks don't fire early enough.

## Workaround

None found. The only way to make hooks work is to ensure files exist at the exact paths Claude uses, which defeats the purpose of path translation hooks.

## Related Issues

Similar to #7082 but different - that issue was about permission deny rules, this is about hooks not being called at all for non-existent paths.