Revert "Upgrade to Taffy 0.4" (#7896)

Reverts zed-industries/zed#7868

@nicoburns: this seems to break text input in the chat panel, so
reverting this for now.

<img width="365" alt="image"
src="https://github.com/zed-industries/zed/assets/482957/fc47eee9-6049-49c2-be2c-fb91f7d35caf">

It would be great to upgrade to Taffy 0.4 though, so we should figure
out why that particular input breaks.

Release notes:

- N/A

Cargo.lock

@@ -4016,9 +4016,9 @@ dependencies = [
 
 [[package]]
 name = "grid"
-version = "0.13.0"
+version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d196ffc1627db18a531359249b2bf8416178d84b729f3cebeb278f285fb9b58c"
+checksum = "1df00eed8d1f0db937f6be10e46e8072b0671accb504cf0f959c5c52c679f5b9"
 
 [[package]]
 name = "group"
@@ -9103,14 +9103,12 @@ dependencies = [
 
 [[package]]
 name = "taffy"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fddbee94e20bc4612dcb789953324236eebd4fc6a08c650ccbf7f615e59a0d6a"
+version = "0.3.11"
+source = "git+https://github.com/DioxusLabs/taffy?rev=1876f72bee5e376023eaa518aa7b8a34c769bd1b#1876f72bee5e376023eaa518aa7b8a34c769bd1b"
 dependencies = [
  "arrayvec 0.7.4",
  "grid",
  "num-traits",
- "serde",
  "slotmap",
 ]