Fix kv set with a closure argument (#15588)

<!--
if this PR closes one or more issues, you can automatically link the PR
with
them by using one of the [*linking
keywords*](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue#linking-a-pull-request-to-an-issue-using-a-keyword),
e.g.
- this PR should close #xxxx
- fixes #xxxx

you can also mention related issues, PRs or discussions!
-->
Fixes #15528 
# Description
Fixed `kv set` passing the pipeline input to the closure instead of the
value stored in that key.

# User-Facing Changes
Now `kv set` will pass the value in that key to the closure.

# Tests + Formatting


# After Submitting

crates/nu-std/std-rfc/kv/mod.nu

@@ -38,7 +38,7 @@ export def "kv set" [
   # If passed a closure, execute it
   let arg_type = ($value_or_closure | describe)
   let value = match $arg_type {
-    closure => { $input | do $value_or_closure }
+    closure => { kv get $key --universal=$universal | do $value_or_closure }
     _ => ($value_or_closure | default $input)
   }
 

crates/nu-std/tests/test_std-rfc_kv.nu

@@ -83,7 +83,7 @@ def local-transpose_to_record [] {
 }
 
 @test
-def local-using_closure [] {
+def local-using_cellpaths [] {
     if ('sqlite' not-in (version).features) { return }
 
     let key = (random uuid)
@@ -91,8 +91,8 @@ def local-using_closure [] {
     let size_key = (random uuid)
 
     ls
-    | kv set $name_key { get name }
-    | kv set $size_key { get size }
+    | kv set $name_key $in.name
+    | kv set $size_key $in.size
 
     let expected = "list<string>"
     let actual = (kv get $name_key | describe)
@@ -106,6 +106,22 @@ def local-using_closure [] {
     kv drop $size_key
 }
 
+@test
+def local-using_closure [] {
+    if ('sqlite' not-in (version).features) { return }
+
+    let key = (random uuid)
+
+    kv set $key 5
+    kv set $key { $in + 1 }
+
+    let expected = 6
+    let actual = (kv get $key)
+    assert equal $actual $expected
+
+    kv drop $key
+}
+
 @test
 def local-return-entire-list [] {
     if ('sqlite' not-in (version).features) { return }
@@ -137,7 +153,7 @@ def local-return_value_only [] {
     let key = (random uuid)
 
     let expected = 'VALUE'
-    let actual = ('value' | kv set -r v $key {str upcase})
+    let actual = ('value' | kv set -r v $key ($in | str upcase))
 
     assert equal $actual $expected
 
@@ -233,7 +249,7 @@ def universal-transpose_to_record [] {
 }
 
 @test
-def universal-using_closure [] {
+def universal-using_cellpaths [] {
     if ('sqlite' not-in (version).features) { return }
 
     let key = (random uuid)
@@ -243,8 +259,8 @@ def universal-using_closure [] {
     let size_key = (random uuid)
 
     ls
-    | kv set -u $name_key { get name }
-    | kv set -u $size_key { get size }
+    | kv set -u $name_key $in.name
+    | kv set -u $size_key $in.size
 
     let expected = "list<string>"
     let actual = (kv get -u $name_key | describe)
@@ -259,6 +275,24 @@ def universal-using_closure [] {
     rm $env.NU_UNIVERSAL_KV_PATH
 }
 
+@test
+def universal-using_closure [] {
+    if ('sqlite' not-in (version).features) { return }
+
+    let key = (random uuid)
+    $env.NU_UNIVERSAL_KV_PATH = (mktemp -t --suffix .sqlite3)
+
+    kv set -u $key 5
+    kv set -u $key { $in + 1 }
+
+    let expected = 6
+    let actual = (kv get -u $key)
+    assert equal $actual $expected
+
+    kv drop -u $key
+    rm $env.NU_UNIVERSAL_KV_PATH
+}
+
 @test
 def universal-return-entire-list [] {
     if ('sqlite' not-in (version).features) { return }
@@ -295,7 +329,7 @@ def universal-return_value_only [] {
     let key = (random uuid)
 
     let expected = 'VALUE'
-    let actual = ('value' | kv set --universal -r v $key {str upcase})
+    let actual = ('value' | kv set --universal -r v $key ($in | str upcase))
 
     assert equal $actual $expected