More descriptive names of test files (#9531)

* change generic `tissues` name to more specific
* change `tvarious` to more specific names

tests/closure/tclosure_issues.nim

@@ -1,5 +1,4 @@
 discard """
-  file: "tissues.nim"
   output: '''true'''
 """
 

tests/generics/t5707.nim

@@ -1,6 +0,0 @@
-import sugar
-
-proc foo[T]: seq[int] =
-    return lc[x | (x <- 1..10, x mod 2 == 0), int]
-
-doAssert foo[float32]() == @[2, 4, 6, 8, 10]

tests/generics/tgenerics_issues.nim

@@ -763,3 +763,11 @@ block t3717:
 
   var f: Foo[Foo[int]]
   discard foo(f)
+
+
+
+block t5707:
+  proc foo[T]: seq[int] =
+      return lc[x | (x <- 1..10, x mod 2 == 0), int]
+
+  doAssert foo[float32]() == @[2, 4, 6, 8, 10]