SecurityElement.Escape - escapes the ampersand, too, after the > is escaped for example

### Type of issue

Code doesn't work

### Description

When using SecurityElement.Escape, escaping the string `"007 > 60 KV"` returns the following:
`"007 > 60 KV"`
instead of
`"007 > 60 KV"`

In other words, the result when escaping the `>` character should be `>` but it seems to be escaping the result once the `>` has been escaped.

I have not tried it with other escape characters with ampersand.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.security.securityelement.escape?view=net-9.0&redirectedfrom=MSDN#System_Security_SecurityElement_Escape_System_String_

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Security/SecurityElement.xml

### Document Version Independent Id

e3abeb03-4f7d-494d-03f0-b7a198f04cd2

### Article author

@dotnet-bot