Prefer idiomatic Option handling

When handling null values in Rust, use idiomatic Option patterns instead of verbose nested conditionals. This improves code readability, safety, and reduces the chance of runtime errors.

Always prefer:

1. is_some_and() over map_or(false, |x| ...) when checking conditions on Option values: ```rust // Instead of: self.popover .as_ref() .map_or(false, |popover| popover.signature.len() > 1)

// Use: self.popover .as_ref() .is_some_and(|popover| popover.signature.len() > 1)

2. The `?` operator for early returns instead of verbose `if let Some()` patterns:
```rust
// Instead of:
if let Some(editor) = Self::resolve_active_item_as_svg_editor(workspace, cx) {
    if Self::is_svg_file(&editor, cx) {
        // ... implementation ...
    }
}

// Use:
let editor = Self::resolve_active_item_as_svg_editor(workspace, cx)?;
if Self::is_svg_file(&editor, cx) {
    // ... implementation ...
}

1. .ok() to convert a Result to an Option when appropriate: ```rust // Instead of: let system_id = ids::get_or_create_id(&ids::eval_system_id_path()) .unwrap_or_else(|_| String::new());

// Use: let system_id = ids::get_or_create_id(&ids::eval_system_id_path()).ok();

4. Safe alternatives to `.unwrap()` which can cause runtime panics:
```rust
// Instead of:
workspace.subscribe(&workspace.weak_handle().upgrade().unwrap(), |editor, ...

// Use:
if let Some(workspace) = workspace.weak_handle().upgrade() {
    cx.subscribe(&workspace, |editor, ...
}

These patterns make your code more robust against null reference errors while keeping it concise and readable.