fix: supportFile path and supportFile false for vite on windows

[ZachJW34]

• Closes UNIFY-1599

User facing changelog

Fix supportFile error for applications using vite-dev-server for CT testing.

Additional details

There were two issues with how we were handling the support file.

1. We were not providing a second argument for .replace, causing the replaced value to become undefined link
2. We were using string methods on a potential boolean value link

This PR fixes both of them. I developed this PR on my Windows machine. All the tests for @cypress/vite-dev-server were failing for Windows but now they are passing. I also added additional test coverage for both webpack and vite dev-servers for supportFile: false.

How has the user experience changed?

Before:

After:

PR Tasks

• Have tests been added/updated?
• Has the original issue (or this PR, if no issue exists) been tagged with a release in ZenHub? (user-facing changes only)
• Has a PR for user-facing changes been opened in cypress-documentation?
• Have API changes been updated in the type definitions?
• Have new configuration options been added to the cypress.schema.json?

[cypress-bot]

Thanks for taking the time to open a PR!

• Create a Draft Pull Request if your PR is not ready for review. Mark the PR as Ready for Review when you're ready for a Cypress team member to review the PR.
• Become familiar with the Code Review Checklist for guidelines on coding standards and what needs to be done before a PR can be merged.

[cypress]

---

Test summary

17883 • 0 • 217 • 0 • 2

---

Run details

Project	cypress
Status	Passed
Commit	d0b0b52
Started	Apr 25, 2022 7:26 PM
Ended	Apr 25, 2022 7:40 PM
Duration	14:23 💡
OS	Linux Debian - 10.10
Browser	Multiple

View run in Cypress Dashboard ➡️

---

Flakiness

	cypress/e2e/next.cy.ts		2
1	Working with next-12 > should detect new spec
2	Working with next-11-webpack-4 > should live-reload on src changes

---

This comment has been generated by cypress-bot as a result of this project's GitHub integration settings. You can manage this integration in this project's settings in the Cypress Dashboard

[lmiller1990]

One comment on readability.

[tbiethman]

Verified vite-dev-server tests are passing on my Windows VM