Numeric input - Basic example: page crash on selecting default locale

[Comi9]

blueprint/packages/docs-app/src/examples/core-examples/numericInputBasicExample.tsx

Line 157 in 2db16b0

[{ label: "Default", value: "" }, ...LOCALES],

Low prio

In the docs section for Numeric input - Basic example, selecting any option in the Locale selector, then going back to default option results in page crash due to incorrect locale information provided.

Current:
[{ label: "Default", value: "" }, ...LOCALES]

Expected:
[{ label: "Default", value: "en-US" }, ...LOCALES]
Suggesting "en-US" as convenience fallback.

cc: @adidahiya