Fuzzy-match lines when applying edits from the assistant (#12056)

This uses Jaro-Winkler similarity for now, which seemed to produce
pretty good results in my tests. We can easily swap it with something
else if needed.

Release Notes:

- N/A

Cargo.lock

@@ -368,6 +368,7 @@ dependencies = [
  "serde_json",
  "settings",
  "smol",
+ "strsim 0.11.1",
  "telemetry_events",
  "theme",
  "tiktoken-rs",
@@ -1684,7 +1685,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4c2f7349907b712260e64b0afe2f84692af14a454be26187d9df565c7f69266a"
 dependencies = [
  "memchr",
- "regex-automata 0.3.8",
+ "regex-automata 0.3.9",
  "serde",
 ]
 
@@ -2094,7 +2095,7 @@ dependencies = [
  "bitflags 1.3.2",
  "clap_lex 0.2.4",
  "indexmap 1.9.3",
- "strsim",
+ "strsim 0.10.0",
  "termcolor",
  "textwrap",
 ]
@@ -2118,7 +2119,7 @@ dependencies = [
  "anstream",
  "anstyle",
  "clap_lex 0.5.1",
- "strsim",
+ "strsim 0.10.0",
 ]
 
 [[package]]
@@ -8141,9 +8142,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.3.8"
+version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2f401f4955220693b56f8ec66ee9c78abffd8d1c4f23dc41a23839eb88f0795"
+checksum = "59b23e92ee4318893fa3fe3e6fb365258efbfe6ac6ab30f090cdcbb7aa37efa9"
 
 [[package]]
 name = "regex-automata"
@@ -9783,6 +9784,12 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "strum"
 version = "0.25.0"