Formatting breaks with specific types of in template strings strings

Describe the bug

Formatting (parsing) breaks with some nested strings inside format strings.

Example:

> echo '$"("a:")"' | nufmt --stdin
$"(", a:")"

> echo '$"(http get "https://google.com")"' | nufmt --stdin
$"(http get ", https://google.com")"

When a similar sequence is present at any point in the script, none of it gets formatted

Environment

Please run show what operating system and version you're running and what version of nufmt you're running.

❯ $nu.os-info
❯ nufmt --version

╭────────────────┬───────────────╮
│ name           │ linux         │
│ arch           │ x86_64        │
│ family         │ unix          │
│ kernel_version │ 7.2.4-arch1-2 │
╰────────────────┴───────────────╯
nufmt 0.1.4

My Observations about the bug:

This appears to only happen when somewhere inside a template string, there is a string with a :, and something else preceding the colon. Doesn't happen when using nested 'single quote' string

Start by reproducing the examples with nufmt --stdin, especially template strings containing nested strings, a colon, and preceding text. Trace the formatter's template-string parsing from that CLI entry point. Done means both reported examples format correctly without breaking other template strings.