fix: lake: leave run options for script (#3064)

Options passed to `lake script run <name>` / `lake run <name>` after the
`<name>` will now be properly passed on through to the script rather
than being consumed by Lake.

The issue was reported [on
Zulip](https://leanprover.zulipchat.com/#narrow/stream/270676-lean4/topic/Lake.20script.20flag.20.22passthrough.22.3F/near/407734447).

src/lake/Lake/CLI/Main.lean

@@ -226,7 +226,7 @@ protected def list : CliM PUnit := do
         IO.println script.name
 
 protected nonrec def run : CliM PUnit := do
-  processOptions lakeOption
+  processLeadingOptions lakeOption  -- between `lake [script] run` and `<name>`
   let config ← mkLoadConfig (← getThe LakeOptions)
   let ws ← loadWorkspace config
   if let some spec ← takeArg? then

src/lake/examples/scripts/expected.out

@@ -3,6 +3,7 @@ scripts/dismiss
 scripts/greet
 Hello, world!
 Hello, me!
+Hello, --me!
 Display a greeting
 
 USAGE:

src/lake/examples/scripts/test.sh

@@ -11,6 +11,7 @@ $LAKE update
 $LAKE script list | tee produced.out
 $LAKE run /greet | tee -a produced.out
 $LAKE script run greet me | tee -a produced.out
+$LAKE script run greet --me | tee -a produced.out
 $LAKE script doc greet | tee -a produced.out
 $LAKE script run hello | tee -a produced.out
 $LAKE script run dep/hello | tee -a produced.out