Increase discoverability of Generate Similar Sound

[ElizabethRiffle]

When asked to create a similar sound 4/5 Insiders manually created their own sound instead of using the Generate Similar Sound function most likely because it didn't stick out to them amongst the rest of the sound editor UI.

[clkantner]

@abchatra assigned, based on design crit discussion we will pause and see how current release feedback validates this as something to revisit