[FEAT] - Clear Pin should require current Pin

[ThingCoDanW]

Which package is this related to?

Specify the package, or if it is a new package suggest a name.

If this covers multiple packages, if possible open an issue for both and PR separately: this will keep the PR's scope as small as possible (plus each package needs separate version bumps & republishing after the fix has been applied).

• [x] @thingco/auth-flows
• [ ] @thingco/graphviz
• [ ] @thingco/react-component-library
• [ ] @thingco/shared-types
• [ ] @thingco/unit-formatter
• [ ] @thingco/user-preferences
• [ ] @thingco/user-preferences-store-web
• [ ] @thingco/user-preferences-store-native
• [ ] new package (@thingco/{enter name here})

Is your feature request related to a problem? Please describe. Any pin operations should require sucessful pin entry first - currently this is not possible with clear pin

Describe the solution you'd like Add new flow to validate current pin before calling changeDeviceSecurityType

Additional context This also adds consistency, considering change pin requires current pin to be entered first.

[ThingCoDanW]

Possibly no longer needed if we are making pin mandatory.

[DanCouper]

Yep, no longer needed: only time pin is cleared is on logout, so don't care at that point, just blow everything away