fix: :bug: wrongly trimmed short version of songs

[dnaroma]

Description

Add an extra condition to check if a user is trying to download a full or short song version. If the user decided on the short one, no trim should be applied.

Related Issue

417

Motivation and Context

Short version of music downloaded have first nine seconds trimmed if "Skip beginning silence" was not toggled off in long version tab

How Has This Been Tested?

• [ ] Chrome (Desktop)
• [ ] Chrome (Mobile)
• [x] Firefox (Desktop)
• [ ] Firefox (Mobile)
• [ ] Safari (Desktop, optional)
• [ ] Safari (iPhone, optional)
• [ ] Safari (iPad, optional)

Screenshots (if appropriate):