Fix compilation errors: add missing log import and remove duplicate

- Add missing `const log = @import("../../log.zig");` in network.zig
- Remove duplicate `log` declaration inside setCdpCookie in storage.zig
  (already declared at file scope)

Fixes compilation errors:
- src/cdp/domains/network.zig:124:9: error: use of undeclared identifier 'log'
- src/cdp/domains/storage.zig:135:15: error: local constant shadows declaration of 'log'

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cdp/domains/network.zig

@@ -19,6 +19,7 @@
 const std = @import("std");
 const lp = @import("lightpanda");
 const Allocator = std.mem.Allocator;
+const log = @import("../../log.zig");
 
 const CdpStorage = @import("storage.zig");
 

src/cdp/domains/storage.zig

@@ -132,7 +132,6 @@ pub fn setCdpCookie(cookie_jar: *CookieJar, param: CdpCookie) !void {
     // This allows Puppeteer's page.setCookie() to work, which may send cookies with
     // partitionKey as part of its cookie-setting workflow.
     if (param.partitionKey != null) {
-        const log = @import("../../log.zig");
         log.debug(.storage, "partitionKey ignored in setCdpCookie", .{});
     }
     // Still reject unsupported features