Use vim.default_mode setting instead of hardcoding Mode::Normal

[illode]

Closes #26859. Specifically, fixes this issue with:

• vim::VisualDelete
• vim::VisualYank
• vim::VisualReplace
• vim::AddSurrounds
• vim::Paste
• vim::Increment
• All of the vim case changing actions
• vim::JoinLines
• vim::ToggleComments

Release Notes:

• Fixed yanking, pasting, and several other actions ignoring the vim.default_mode setting.

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[illode]

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[illode]

I'm not 100% sure that the switch_mode in temporary_normal should be changed, since it's not clear what it's purpose is. Aside from that, tested briefly and the changes seem to work without issue.

I removed the ones I wasn't sure were necessary since it seemed like one of them was causing slightly jank mode switching behavior.