vscode: Breakpoints are unexpectedly shown as not-verified after removing and re-adding them

@isidorn As a result of discussions in #59984 and #62264 I have started removing and re-creating breakpoints in setBreakpointsRequest because we deemed it was the only way to attach IDs to them if I couldn’t supply the IDs immediately. However, I’m seeing a strange issue where breakpoints will become marked as unverified whenever I remove (a different) one, even though I create them with verified: true.

Here’s a fake setBreakpointsRequest implementation that shows the issue. All it does is sets them all as unverified from the original request, then events to remove each one, and then sends events to recreate them (this time, with IDs). As discussed, I send the response to the request before I send the removed/new events):

	private id = 1;
	protected async setBreakPointsRequest(
		response: DebugProtocol.SetBreakpointsResponse,
		args: DebugProtocol.SetBreakpointsArguments,
	): Promise<void> {
		const source: DebugProtocol.Source = args.source;
		let breakpoints: DebugProtocol.SourceBreakpoint[] = args.breakpoints;
		if (!breakpoints)
			breakpoints = [];

		// Send back all unverified breakpoints.
		response.body = {
			breakpoints: breakpoints.map((_) => ({
				verified: false,
			} as DebugProtocol.Breakpoint)),
		};
		this.sendResponse(response);

		// Now remove them all.
		breakpoints.forEach((breakpoint) => {
			this.sendEvent(new BreakpointEvent("removed", {
				column: breakpoint.column,
				line: breakpoint.line,
				source: new Source(args.source.name, args.source.path),
			} as DebugProtocol.Breakpoint));
		});

		// Now re-add them all.
		breakpoints.forEach((breakpoint) => {
			this.sendEvent(new BreakpointEvent("new", {
				column: breakpoint.column,
				id: this.id++,
				line: breakpoint.line,
				source: new Source(args.source.name, args.source.path),
				verified: true,
			} as DebugProtocol.Breakpoint));
		});
	}

And here’s a video showing that whenever I remove a breakpoint, the others all become unverified (yet whenever I add one, they always become verified). I can’t figure out why this happens.