[CT-2696] Compilation error when rendering filter in metrics

[Jstein77]

Is this a new bug in dbt-core?

• I believe this is a new bug in dbt-core
• I have searched the existing issues, and I could not find an existing issue for this bug

Current Behavior

I have a metric with a filter defined:

metrics:
  - name: "east_coast_order_amount"
    description: "Sum of orders from the east coast."
    type: simple
    label: "test"
    type_params:
      measures:
        - orders
    filter: |
      {{dimension('location_name')}} in ('Philadelphia')"

When I execute dbt run I get the following error:

Compilation Error
  Could not render {{dimension('location_name')}} in ('Philadelphia')
  : 'dimension' is undefined

This is likely due to the parser trying to render jinja when it encounters the double curlies, which it shouldn't be doing. If i escape the curlies dbt run succeeds. i.e

metrics:
  - name: "east_coast_order_amount"
    description: "Sum of orders from the east coast."
    type: simple
    label: "test"
    type_params:
      measures:
        - orders
    filter: |
      \{\{dimension('location_name')\}\} in ('Philadelphia')"

Expected Behavior

dbt should parse the filter correctly.

Steps To Reproduce

Define a filter in a semantic model and run dbt run.

Relevant log output

No response

Environment

- OS:
- Python:
- dbt:

Which database adapter are you using with dbt?

No response

Additional Context

No response

[Jstein77]

cc @QMalcolm