feat(build): add ignoreConditions option to BuildOptions

[productdevbook]

When we use custom Conditions, TypeScript throws errors when dealing with paths, etc. In reality, we only need this during development. That’s why we want to disable these Conditions during the build process. This is why I came up with this new structure.

diff --git a/dist/shared/unbuild.B2_7OVir.mjs b/dist/shared/unbuild.B2_7OVir.mjs
index 89838b3093726b0bdd864943be4eb480e74ecbea..48d45f6a36242042c1505b2400880c3a77c55912 100644
--- a/dist/shared/unbuild.B2_7OVir.mjs
+++ b/dist/shared/unbuild.B2_7OVir.mjs
@@ -329,6 +329,17 @@ function validatePackage(pkg, rootDir, ctx) {
   if (!pkg) {
     return;
   }
+  for (const item of ctx.options.ignoreConditions || []) {
+    if (typeof pkg.exports === 'object' && !Array.isArray(pkg.exports)) {
+      for (const key of Object.keys(pkg.exports)) {
+        const exportEntry = pkg.exports[key];
+        if (exportEntry && typeof exportEntry === 'object' 
+          && !Array.isArray(exportEntry) && exportEntry[item] !== undefined) {
+            delete exportEntry[item];
+          }
+      }
+    }
+  }
   const filenames = new Set(
     [
       ...typeof pkg.bin === "string" ? [pkg.bin] : Object.values(pkg.bin || {}),