fix: lake: improper uses of computeArtifact w/o text (#11216)

This PR ensures that the `text` argument of `computeArtifact` is always
provided in Lake code, fixing a hashing bug with
`buildArtifactUnlessUpToDate` in the process.

Closes #11209

src/lake/Lake/Build/Common.lean

@@ -604,7 +604,7 @@ public def buildArtifactUnlessUpToDate
           else
             computeArtifact file ext text
       else if (← savedTrace.replayIfUpToDate file depTrace) then
-        computeArtifact file ext
+        computeArtifact file ext text
       else if let some art ← fetchArt? (restore := true) then
         return art
       else
@@ -627,7 +627,7 @@ where
       build
       clearFileHash file
       removeFileIfExists traceFile
-      computeArtifact file ext
+      computeArtifact file ext text
 
 /--
 Build `file` using `build` after `dep` completes if the dependency's

src/lake/Lake/Build/Module.lean

@@ -635,7 +635,8 @@ private def Module.computeArtifacts (mod : Module) (isModule : Bool) : FetchM Mo
   }
 where
   @[inline] compute file ext := do
-    computeArtifact file ext
+    -- Note: Lean produces LF-only line endings for `.c` and `.ilean`, so no normalization.
+    computeArtifact file ext (text := false)
   computeIf c file ext := do
      if c then return some (← compute file ext) else return none