Mixed-case named contexts cannot be switched to from contexts view

[omry-arpaly]

Describe the bug
In K9s 0.30.3, switching contexts to contexts that are give specific names with mixed letter case (Human friendly string like "Dev-US", instead of EKS cluster arn:aws:eks:region:1234556678899:cluster/cluster-name-goes-here), results in a quick "invalid context: `Dev-US specified" (yes, a single, single quote is right there - checked the code: it's an issue with the logged message).
This started with the 0.30 release of K9s (not sure about specific regressions until the current 0.30.3).
Removing the K9s config directory and starting over doesn't seem to have a positive effect.

To Reproduce

1. Switch to contexts view: ':ctx'
2. Select a named context (one that has a "name:" attribute in ~/.kube/config), which has at least one uppercase letter.
3. Get error message (the one with the single quote...)

Errors logged:

3:35PM DBG SWITCH CTX "contexts"--"Test"
3:35PM DBG Switching context "Test"
3:35PM DBG TABLE-UPDATER canceled -- "contexts"
3:35PM DBG --> Switching Context "test"--"po"
3:35PM DBG ClusterInfo updater canceled!
3:35PM WRN CustomView watcher failed error="open /Users/omry/Library/Application Support/k9s/views.yaml: no such file or directory"
3:35PM ERR invalid context `test specified
3:35PM DBG CustomViewWatcher CANCELED `/Users/omry/Library/Application Support/k9s/views.yaml!!

Expected behavior
Changing contexts by name should work normally regardless of name composition.

Versions (please complete the following information):

• OS: 13.6.3
• K9s: 0.30.3
• K8s: 1.24

[omry-arpaly]

Thanks @derailed and @wjiec! You're awesome! 🥳