Missing identifier quoting

[apisarenco]

Describe the bug

Identifiers are not quoted even when the setting is on

Steps to reproduce

1. Have as source databases that contain non-alphanumeric characters (ex. UUID as database name)
2. Have queries that source from those tables
3. Compile the model and behold! not quoted strings.

Expected behaviour

Database names and table names should be quoted when configured

Code examples, such as models or profile settings

version: 2

sources:
  - name: t01
    schema: "a6bf4b3f-17ee-4ae3-b769-acc2ffe0d708"
    tables: &tables
      - name: the_table
      - name: the_other_table
    quoting: &quoting
      database: true
      schema: true
      identifier: true

  - name: t02
    schema: "6410659e-85c7-413b-b952-aca7fd639788"
    tables: *tables
    quoting: *quoting

{{
    config({
        "materialized": "table",
        "engine": "MergeTree()",
        "schema": "dev",
        "order_by": '(id)'
    })
}}
{% set tenants =  ['t01', 't02'] %}
{% set data_sources = [] %}
{% for tenant in tenants %}
{% do data_sources.append(source(tenant, 'the_table')) %}
{% endfor %}
WITH cte AS (
    {{ dbt_utils.union_relations(data_sources) }}
)
SELECT * FROM cte