Describe the bug
When using a custom recognizer defined in YAML with a context field, the context words are ignored in scoring. The match score remains at the base pattern score instead of being boosted by the context.

To Reproduce

1. Create a custom recognizer YAML:

- name: "Date of Birth Recognizer"
  type: custom
  supported_languages:
    - en
  patterns:
    - name: "DOB without slashes"
      regex: "(\b(19|20)\d{2}(0[1-9]|1[0-2])(0[1-9]|[12]\d|3[01])\b)"
      score: 0.8
  context:
    - DOB
  supported_entity: "DATE_TIME"

2. Load it into Presidio and run:

res = analyzer.analyze(
    text="DOB: 19571012",
    language="en",
    return_decision_process=True
)

3. Observe the match score.
   It's 0.8, instead of 1.

Expected behavior
The context DOB should boost the score from 0.8 to 1.0.