PY-28782 Fix remove assignment expression target inspection for multiple targets

(cherry picked from commit 2a8862d459955a23def7941229007e26d076c54e)

IJ-CR-4054

GitOrigin-RevId: 0068c0195a89e2272e9c632acc5494ea7ff0b120

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementFirstTarget.py

@@ -0,0 +1,3 @@
+def f():
+    a<caret>    = b = 0
+    return b

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementFirstTarget_after.py

@@ -0,0 +1,3 @@
+def f():
+    <caret>b = 0
+    return b

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementSecondTarget.py

@@ -0,0 +1,3 @@
+def f():
+    a =     b<caret>  = 0
+    return a

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementSecondTarget_after.py

@@ -0,0 +1,3 @@
+def f():
+    a = 0
+    return a

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementUnpackingFirstTarget.py

@@ -0,0 +1,3 @@
+def f():
+    a = <caret>unused, b = 42, 42
+    return a, b

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementUnpackingFirstTarget_after.py

@@ -0,0 +1,3 @@
+def f():
+    a = _, b = 42, 42
+    return a, b

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementUnpackingSecondTarget.py

@@ -0,0 +1,3 @@
+def f():
+    a = b, <caret>unused = 42, 42
+    return a, b

python/testData/quickFixes/PyRemoveUnusedLocalQuickFixTest/removeChainedAssignmentStatementUnpackingSecondTarget_after.py

@@ -0,0 +1,3 @@
+def f():
+    a = b, _ = 42, 42
+    return a, b