Shared input/output IDs shouldn't break apps even in devmode

[gadenbuie]

In #4019 we downgraded the shared input/output ID error to a warning when not in devmode, which doesn't break deployed apps.

shiny/srcts/src/shiny/bind.ts

Lines 427 to 432 in 0b7fda7

	// Only throw if we're in dev mode. Otherwise, just log a warning.
	if (Shiny.inDevMode()) {
	throw bindingValidity.error;
	} else {
	console.warn("[shiny] " + bindingValidity.error.message);
	}

But the JavaScript error breaks apps run through devmode, while also showing an error message. Having run into this in the wild a few times now -- and given that we're trying to turn on devmode by default in more situations, like in the VS Code extension -- I would prefer the in-client warning be shown without breaking the app.