Add telemetry for usage of activateEnvInCurrentTerminal setting

[luabud]

• Add telemetry for Add a setting to activate environment in the current open terminal #7665
• Address Kartik's comment here

[luabud]

when reviewing/validating this, let's make sure it works on a multi workspace scenario

[kimadeline]

✅ Validated:

• load workspace folder with no terminal open: telemetry sent with { isTerminalVisible: false }
• load workspace folder with terminal open: terminal activated and telemetry sent with { isTerminalVisible: true }
• load multiroot workspace with no terminal open: telemetry sent with { isTerminalVisible: false }
• load multiroot workspace with a terminal open: terminal activated and telemetry sent with { isTerminalVisible: true }, however the virtual environment being activated is the one from the first folder in the .code-workspace file, see Auto activation of environments does not work with multi root workspaces #3325 (comment)