stdlib: fix the clip command with integer values (#8898)

# Description
this PR fixes the `std clip` command which would not copy integer data
😮
and, as all the input data is now treated as raw `string` with the
`table | into string` conversion, i've removed the "stripped" print when
done clipping the data 👍

❌ from the `main` on which this PR is based (cbedc8403)
> **Note**
> from inside`cargo run` and with a `use std clip`
- ✔️ `'foo' | clip`
- ✔️ `ls | get 0 | clip`
- ❌ `123 | clip`
 
# User-Facing Changes
✔️ from the tip of the PR branch
> **Note**
> from inside`cargo run` and with a `use std clip`
- ✔️ `'foo' | clip`
- ✔️ `ls | get 0 | clip`
- ✔️ `123 | clip`

# Tests + Formatting
- 🟢 `toolkit fmt`
- 🟢 `toolkit clippy`
- ⚫ `toolkit test`
- ⚫ `toolkit test stdlib`

# After Submitting
```
$nothing
```

crates/nu-std/lib/mod.nu

@@ -108,10 +108,7 @@ export def clip [
     --silent: bool  # do not print the content of the clipboard to the standard output
     --no-notify: bool  # do not throw a notification (only on linux)
 ] {
-    let input = $in
-    let input = if ($input | describe) == "string" {
-        $input | ansi strip
-    } else { $input }
+    let input = ($in | table | into string | ansi strip)
 
     match $nu.os-info.name {
         "linux" => {
@@ -144,12 +141,7 @@ export def clip [
 
     if not $silent {
         print $input
-
-        print --no-newline $"(ansi white_italic)(ansi white_dimmed)saved to clipboard"
-        if ($input | describe) == "string" {
-            print " (stripped)"
-        }
-        print --no-newline $"(ansi reset)"
+        print $"(ansi white_italic)(ansi white_dimmed)saved to clipboard(ansi reset)"
     }
 
     if (not $no_notify) and ($nu.os-info.name == linux) {