This reverts commit f9b939fe89.
That fix caused a regression that prevented a single `/property` option to
define multiple properties using the `/property:First=foo;Second=bar` syntax.
Users that want literal semicolons in the property values should use escaped
quotes around the property value, e.g. `/property:Prop='"foo;bar;baz"'`.
Fixes#9369.
This commit ensures that any `/property` option's value is surrounded by quotes
to allow MSBuild to properly interpret special characters like semicolons.
Users familiar with MSBuild expect `/property:Name="Value"` to handle
semicolons. However, since `dotnet` parses the command line first, the
quotes get processed by its command line parser. This results in
`/property:Name=Value` being passed to MSBuild, which will not parse a "Value"
containing a semicolon correctly.
Since it is safe to always quote the property value for this option, this fix
simply ensures that the value is surrounded by quotes.
This fixes the issue for all commands that forward arguments to MSBuild.
Fixes#7791.
