silence mass dump of BareExcept when using unittest (#25260)

Seems better to change it to `CatchableError` instead?

(cherry picked from commit cc4c7377b2)

lib/pure/unittest.nim

@@ -547,14 +547,11 @@ template test*(name, body) {.dirty.} =
     for formatter in formatters:
       formatter.testStarted(name)
 
-    {.push warning[BareExcept]:off.}
     try:
       when declared(testSetupIMPLFlag): testSetupIMPL()
       when declared(testTeardownIMPLFlag):
         defer: testTeardownIMPL()
-      {.push warning[BareExcept]:on.}
       body
-      {.pop.}
 
     except Exception:
       let e = getCurrentException()
@@ -577,7 +574,6 @@ template test*(name, body) {.dirty.} =
       )
       testEnded(testResult)
       checkpoints = @[]
-    {.pop.}
 
 proc checkpoint*(msg: string) =
   ## Set a checkpoint identified by `msg`. Upon test failure all
@@ -803,11 +799,8 @@ macro expect*(exceptions: varargs[typed], body: untyped): untyped =
       discard
 
   template expectBody(errorTypes, lineInfoLit, body): NimNode {.dirty.} =
-    {.push warning[BareExcept]:off.}
     try:
-      {.push warning[BareExcept]:on.}
       body
-      {.pop.}
       checkpoint(lineInfoLit & ": Expect Failed, no exception was thrown.")
       fail()
     except errorTypes:
@@ -816,8 +809,6 @@ macro expect*(exceptions: varargs[typed], body: untyped): untyped =
       let err = getCurrentException()
       checkpoint(lineInfoLit & ": Expect Failed, " & $err.name & " was thrown.")
       fail()
-    {.pop.}
-
   var errorTypes = newNimNode(nnkBracket)
   var hasException = false
   for exp in exceptions: