fix(install): fix the case that package scope contains tilde.

[Hanaasagi]

What does this PR do?

Close #7045

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

I wrote automated tests

[Jarred-Sumner]

huh that is expected to work? interesting

[Jarred-Sumner]

Actually, this code should check that the path name between @ and / is a valid URL component.

Something like this:

pub fn hasURLComponentThatNeedsEncoding(str: []const u8) bool {
        const do_not_escape_when_encoding_uri_component = comptime brk: {
            // encodeURIComponent uses this table:
            const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" ++
                "abcdefghijklmnopqrstuvwxyz" ++
                "0123456789" ++
                "!'()*-._~";

            var bitset = std.bit_set.IntegerBitSet(std.math.maxInt(u8)).initFull();
            for (chars) |char| {
                bitset.unset(@as(u8, char));
            }

            break :brk bitset;
        };

        for (str) |char| {
            if (do_not_escape_when_encoding_uri_component.isSet(char)) {
                return true;
            }
        }

        return false;
    }

npm uses encodeURIComponent

[Hanaasagi]

Should I rewrite these switch branches to bitmap?

[dylan-conway]

Thank you!