title: The "tag=" nbt tag in minecraft selector
body: <p>Very simple short and straightforward. I found that if I give myself firework_rockets with a custom tag called 'test', the item has an nbt={Tags:['test']}. The command I use is <code>/give @s firework_rocket{Tags:['test']} 64</code></p>
  <p>However once the firework is shot via a crossbow, I tried to retrieve its data and to my surprise, found out that the Tags:['test'] is not stored directly in the entity, but more discretely in an nbt called tag=. For example: entity firework_rocket has the following data ---
  <code>{OnGround:0b,Air:300s,blah blah blah, tag: {Tags:[&quot;test&quot;]},Count:64b}</code></p>
  <p>As seen from above, <strong>this Tags:[&quot;test&quot;] tag in being stored in an nbt tag called tag</strong>.
  If I want to detect a specific nbt tag such as the Air tag, I could do so simply with <code>execute at @e[nbt={Air:300s}] run summon tnt</code></p>
  <p>But what I want to do here is to detect the Tags:[&quot;test&quot;] tag. <code> /execute at @e[nbt={tag:{Tags:[&quot;test&quot;]}}]</code> simply wont work.</p>
  <p>Can someone lend a helping hand plssss?</p>