fix: check if the config file exists

[tatomyr]

What/Why/How?

Return a default fallbeck if there is no config file for the provided path.

Reference

Testing

Screenshots (optional)

Check yourself

• Code changed? - Tested with redoc/reference-docs/workflows (internal)
• All new/updated code is covered with tests
• New package installed? - Tested in different environments (browser/node)

Security

• Security impact of change has been considered
• Code follows company security practices and guidelines

[changeset-bot]

🦋 Changeset detected

Latest commit: b9e97d7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

Name	Type
@redocly/openapi-core	Patch
@redocly/cli	Patch

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[github-actions]

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
redocly lint packages/core/src/benchmark/benches/rebilly.yaml	972.6 ± 20.2	946.8	1017.7	1.00
redocly-next lint packages/core/src/benchmark/benches/rebilly.yaml	980.3 ± 22.7	941.7	1014.4	1.01 ± 0.03

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	77.02%	4452/5780
🟡	Branches	67.5%	2463/3649
🟡	Functions	70.64%	741/1049
🟡	Lines	77.22%	4187/5422

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / load.ts	87.72% (-1.17% 🔻)	80.36%	100%	88.89% (-1.31% 🔻)
🟢	... / config-resolvers.ts	83.43%	73.38%	100%	84.05%

Test suite run success

734 tests passing in 102 suites.

Report generated by 🧪jest coverage report action from b9e97d7