fix: Test and improve behaviour of auto-suggest with dependencies

[claremacrae]

Description

I'm using the new auto-suggest for ID and dependsOn in my own vault, and it's incredibly valuable.

Before release, I wanted to add tests to make sure I understand the code.

Along the way, I improved a couple of behaviours:

• 99129ea - allow additional dependencies after ids with hyphen and underscore
• bcee94a - correct the search for blocking tasks to use exact id match, not substring

Motivation and Context

Getting this facility ready for release

How has this been tested?

• Adding new tests
• Manual exploratory testing

Screenshots (if appropriate)

Types of changes

Changes visible to users:

• Bug fix (prefix: fix - non-breaking change which fixes an issue)

Internal changes:

• Refactor (prefix: refactor - non-breaking change which only improves the design or structure of existing code, and making no changes to its external behaviour)
• Tests (prefix: test - additions and improvements to unit tests and the smoke tests)

Checklist

• My code follows the code style of this project and passes yarn run lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• My change has adequate Unit Test coverage.

Terms

• My contribution follows this project's contributing guide
• I agree to follow this project's Code of Conduct