Refactor login flow types into matrix-js-sdk

[hughns]

The corresponding PR for matrix-js-sdk is matrix-org/matrix-js-sdk#2669 which must be merged at the same time (was originally part of matrix-org/matrix-js-sdk#2633)

Checklist

• Tests written for new code (and old code if feasible)
• Linter and other CI checks pass
• Sign-off given on the changes (see CONTRIBUTING.md)

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This change is marked as an internal change (Task), so will not be included in the changelog.

[turt2live]

it appears as though a commit is missing - this does not compile.

[hughns]

@turt2live unless you are looking at something different, is the issue that it depends on the js-sdk branch given by matrix-org/matrix-js-sdk#2633?

[hughns]

@turt2live the required changes are now on js-sdk develop branch but don't seem to be pulled in for the test on this PR. What have I done wrong? 🤦‍♂️

[turt2live]

it's probably the lockfile being a huge pain, but let's see if another merge does it.

Initial review was based on the diff being a large shade of red, fwiw - didn't see the js-sdk PR at all and it should have considered it as part of the build.

[turt2live]

oh, the react-sdk PR got reverted.

@hughns what's the status of this?

[hughns]

@turt2live the status is that there is a new smaller PR matrix-org/matrix-js-sdk#2669 which does the remaining change (which is what broke react-sdk earlier in the week).