Bug when formatting float literals in BigQuery

**Describe the bug**
`sqlfmt` adds unnecessary spaces for float literals in E notation in BigQuery

**To Reproduce**
`1e-9`

**Expected behavior**
`1e-9`

**Actual behavior**
`1 e -9`

**Additional context**
We are using the sqlfmt embedded in dbt develop. The UI on `https://sqlfmt.com/` produces the same result.
